diff options
Diffstat (limited to 'archival/dpkg.c')
| -rw-r--r-- | archival/dpkg.c | 1554 |
1 files changed, 1365 insertions, 189 deletions
diff --git a/archival/dpkg.c b/archival/dpkg.c index 501cd60..ec199a7 100644 --- a/archival/dpkg.c +++ b/archival/dpkg.c @@ -33,301 +33,1477 @@ * - Packages with previously unknown status are inserted at the begining of * the status file * - * Work to be done - * - (bugs, unknown, please let me know when you find them) - * - dependency checking is incomplete - * - provides, replaces, conflicts fields arent considered when installing + * Bugs that need to be fixed + * - (unknown, please let me know when you find any) + * */ #include <getopt.h> #include <stdlib.h> #include <string.h> #include <unistd.h> -#include "../libbb/deb_functs.h" -#include "libbb.h" +#include "unarchive.h" #include "busybox.h" +/* NOTE: If you vary HASH_PRIME sizes be aware, + * 1) Tweaking these will have a big effect on how much memory this program uses. + * 2) For computational efficiency these hash tables should be at least 20% + * larger than the maximum number of elements stored in it. + * 3) All _HASH_PRIME's must be a prime number or chaos is assured, if your looking + * for a prime, try http://www.utm.edu/research/primes/lists/small/10000.txt + * 4) If you go bigger than 15 bits you may get into trouble (untested) as its + * sometimes cast to an unsigned int, if you go to 16 bit you will overlap + * int's and chaos is assured, 16381 is the max prime for 14 bit field + */ + +/* NAME_HASH_PRIME, Stores package names and versions, + * I estimate it should be at least 50% bigger than PACKAGE_HASH_PRIME, + * as there a lot of duplicate version numbers */ +#define NAME_HASH_PRIME 16381 +char *name_hashtable[NAME_HASH_PRIME + 1]; + +/* PACKAGE_HASH_PRIME, Maximum number of unique packages, + * It must not be smaller than STATUS_HASH_PRIME, + * Currently only packages from status_hashtable are stored in here, but in + * future this may be used to store packages not only from a status file, + * but an available_hashtable, and even multiple packages files. + * Package can be stored more than once if they have different versions. + * e.g. The same package may have different versions in the status file + * and available file */ +#define PACKAGE_HASH_PRIME 10007 +typedef struct edge_s { + unsigned int operator:3; + unsigned int type:4; + unsigned int name:14; + unsigned int version:14; +} edge_t; + +typedef struct common_node_s { + unsigned int name:14; + unsigned int version:14; + unsigned int num_of_edges:14; + edge_t **edge; +} common_node_t; +common_node_t *package_hashtable[PACKAGE_HASH_PRIME + 1]; + +/* Currently it doesnt store packages that have state-status of not-installed + * So it only really has to be the size of the maximum number of packages + * likely to be installed at any one time, so there is a bit of leaway here */ +#define STATUS_HASH_PRIME 8191 +typedef struct status_node_s { + unsigned int package:14; /* has to fit PACKAGE_HASH_PRIME */ + unsigned int status:14; /* has to fit STATUS_HASH_PRIME */ +} status_node_t; +status_node_t *status_hashtable[STATUS_HASH_PRIME + 1]; + +/* Even numbers are for 'extras', like ored dependecies or null */ +enum edge_type_e { + EDGE_NULL = 0, + EDGE_PRE_DEPENDS = 1, + EDGE_OR_PRE_DEPENDS = 2, + EDGE_DEPENDS = 3, + EDGE_OR_DEPENDS = 4, + EDGE_REPLACES = 5, + EDGE_PROVIDES = 7, + EDGE_CONFLICTS = 9, + EDGE_SUGGESTS = 11, + EDGE_RECOMMENDS = 13, + EDGE_ENHANCES = 15 +}; +enum operator_e { + VER_NULL = 0, + VER_EQUAL = 1, + VER_LESS = 2, + VER_LESS_EQUAL = 3, + VER_MORE = 4, + VER_MORE_EQUAL = 5, + VER_ANY = 6 +}; + enum dpkg_opt_e { - DPKG_OPT_PURGE = 1, - DPKG_OPT_REMOVE = 2, - DPKG_OPT_UNPACK = 4, - DPKG_OPT_CONFIGURE = 8, - DPKG_OPT_INSTALL = 16, - DPKG_OPT_PACKAGENAME = 32, - DPKG_OPT_FILENAME = 64, - DPKG_OPT_LIST_INSTALLED = 128, - DPKG_OPT_FORCE_IGNORE_DEPENDS = 256, + dpkg_opt_purge = 1, + dpkg_opt_remove = 2, + dpkg_opt_unpack = 4, + dpkg_opt_configure = 8, + dpkg_opt_install = 16, + dpkg_opt_package_name = 32, + dpkg_opt_filename = 64, + dpkg_opt_list_installed = 128, + dpkg_opt_force_ignore_depends = 256 }; -extern unsigned short char_name_hash_prime; -extern unsigned short char_ver_hash_prime; -extern unsigned short char_rev_hash_prime; -extern unsigned short char_filename_hash_prime; -extern unsigned short char_source_hash_prime; -extern unsigned short edge_hash_prime; -extern unsigned short node_hash_prime; -/* This function lists information on the installed packages. It loops through - * the status_hashtable to retrieve the info. This results in smaller code than - * scanning the status file. The resulting list, however, is unsorted. - */ -/* TODO: check the character flags ive assigned match real dpkg */ -#ifdef BB_FEATURE_DPKG_LIST -extern void list_packages(void) +typedef struct deb_file_s { + char *control_file; + char *filename; + unsigned int package:14; +} deb_file_t; + + +void make_hash(const char *key, unsigned int *start, unsigned int *decrement, const int hash_prime) { + unsigned long int hash_num = key[0]; + int len = strlen(key); int i; - printf(" Name Version\n"); - printf("+++-==============-==============\n"); + /* Maybe i should have uses a "proper" hashing algorithm here instead + * of making one up myself, seems to be working ok though. */ + for(i = 1; i < len; i++) { + /* shifts the ascii based value and adds it to previous value + * shift amount is mod 24 because long int is 32 bit and data + * to be shifted is 8, dont want to shift data to where it has + * no effect*/ + hash_num += ((key[i] + key[i-1]) << ((key[i] * i) % 24)); + } + *start = (unsigned int) hash_num % hash_prime; + *decrement = (unsigned int) 1 + (hash_num % (hash_prime - 1)); +} + +/* this adds the key to the hash table */ +int search_name_hashtable(const char *key) +{ + unsigned int probe_address = 0; + unsigned int probe_decrement = 0; +// char *temp; + + make_hash(key, &probe_address, &probe_decrement, NAME_HASH_PRIME); + while(name_hashtable[probe_address] != NULL) { + if (strcmp(name_hashtable[probe_address], key) == 0) { + return(probe_address); + } else { + probe_address -= probe_decrement; + if ((int)probe_address < 0) { + probe_address += NAME_HASH_PRIME; + } + } + } + name_hashtable[probe_address] = xstrdup(key); + return(probe_address); +} + +/* this DOESNT add the key to the hashtable + * TODO make it consistent with search_name_hashtable + */ +unsigned int search_status_hashtable(const char *key) +{ + unsigned int probe_address = 0; + unsigned int probe_decrement = 0; + + make_hash(key, &probe_address, &probe_decrement, STATUS_HASH_PRIME); + while(status_hashtable[probe_address] != NULL) { + if (strcmp(key, name_hashtable[package_hashtable[status_hashtable[probe_address]->package]->name]) == 0) { + break; + } else { + probe_address -= probe_decrement; + if ((int)probe_address < 0) { + probe_address += STATUS_HASH_PRIME; + } + } + } + return(probe_address); +} + +/* Need to rethink version comparison, maybe the official dpkg has something i can use ? */ +int version_compare_part(const char *version1, const char *version2) +{ + int upstream_len1 = 0; + int upstream_len2 = 0; + char *name1_char; + char *name2_char; + int len1 = 0; + int len2 = 0; + int tmp_int; + int ver_num1; + int ver_num2; + int ret; + + if (version1 == NULL) { + version1 = xstrdup(""); + } + if (version2 == NULL) { + version2 = xstrdup(""); + } + upstream_len1 = strlen(version1); + upstream_len2 = strlen(version2); + + while ((len1 < upstream_len1) || (len2 < upstream_len2)) { + /* Compare non-digit section */ + tmp_int = strcspn(&version1[len1], "0123456789"); + name1_char = xstrndup(&version1[len1], tmp_int); + len1 += tmp_int; + tmp_int = strcspn(&version2[len2], "0123456789"); + name2_char = xstrndup(&version2[len2], tmp_int); + len2 += tmp_int; + tmp_int = strcmp(name1_char, name2_char); + free(name1_char); + free(name2_char); + if (tmp_int != 0) { + ret = tmp_int; + goto cleanup_version_compare_part; + } + + /* Compare digits */ + tmp_int = strspn(&version1[len1], "0123456789"); + name1_char = xstrndup(&version1[len1], tmp_int); + len1 += tmp_int; + tmp_int = strspn(&version2[len2], "0123456789"); + name2_char = xstrndup(&version2[len2], tmp_int); + len2 += tmp_int; + ver_num1 = atoi(name1_char); + ver_num2 = atoi(name2_char); + free(name1_char); + free(name2_char); + if (ver_num1 < ver_num2) { + ret = -1; + goto cleanup_version_compare_part; + } + else if (ver_num1 > ver_num2) { + ret = 1; + goto cleanup_version_compare_part; + } + } + ret = 0; +cleanup_version_compare_part: + return(ret); +} + +/* if ver1 < ver2 return -1, + * if ver1 = ver2 return 0, + * if ver1 > ver2 return 1, + */ +int version_compare(const unsigned int ver1, const unsigned int ver2) +{ + char *ch_ver1 = name_hashtable[ver1]; + char *ch_ver2 = name_hashtable[ver2]; + + char epoch1, epoch2; + char *deb_ver1, *deb_ver2; + char *ver1_ptr, *ver2_ptr; + char *upstream_ver1; + char *upstream_ver2; + int result; + + /* Compare epoch */ + if (ch_ver1[1] == ':') { + epoch1 = ch_ver1[0]; + ver1_ptr = strchr(ch_ver1, ':') + 1; + } else { + epoch1 = '0'; + ver1_ptr = ch_ver1; + } + if (ch_ver2[1] == ':') { + epoch2 = ch_ver2[0]; + ver2_ptr = strchr(ch_ver2, ':') + 1; + } else { + epoch2 = '0'; + ver2_ptr = ch_ver2; + } + if (epoch1 < epoch2) { + return(-1); + } + else if (epoch1 > epoch2) { + return(1); + } + + /* Compare upstream version */ + upstream_ver1 = xstrdup(ver1_ptr); + upstream_ver2 = xstrdup(ver2_ptr); + + /* Chop off debian version, and store for later use */ + deb_ver1 = strrchr(upstream_ver1, '-'); + deb_ver2 = strrchr(upstream_ver2, '-'); + if (deb_ver1) { + deb_ver1[0] = '\0'; + deb_ver1++; + } + if (deb_ver2) { + deb_ver2[0] = '\0'; + deb_ver2++; + } + result = version_compare_part(upstream_ver1, upstream_ver2); + + free(upstream_ver1); + free(upstream_ver2); + + if (result != 0) { + return(result); + } + + /* Compare debian versions */ + return(version_compare_part(deb_ver1, deb_ver2)); +} + +int test_version(const unsigned int version1, const unsigned int version2, const unsigned int operator) +{ + const int version_result = version_compare(version1, version2); + switch(operator) { + case (VER_ANY): + return(TRUE); + case (VER_EQUAL): + if (version_result == 0) { + return(TRUE); + } + break; + case (VER_LESS): + if (version_result < 0) { + return(TRUE); + } + break; + case (VER_LESS_EQUAL): + if (version_result <= 0) { + return(TRUE); + } + break; + case (VER_MORE): + if (version_result > 0) { + return(TRUE); + } + break; + case (VER_MORE_EQUAL): + if (version_result >= 0) { + return(TRUE); + } + break; + } + return(FALSE); +} + + +int search_package_hashtable(const unsigned int name, const unsigned int version, const unsigned int operator) +{ + unsigned int probe_address = 0; + unsigned int probe_decrement = 0; + + make_hash(name_hashtable[name], &probe_address, &probe_decrement, PACKAGE_HASH_PRIME); + while(package_hashtable[probe_address] != NULL) { + if (package_hashtable[probe_address]->name == name) { + if (operator == VER_ANY) { + return(probe_address); + } + if (test_version(package_hashtable[probe_address]->version, version, operator)) { + return(probe_address); + } + } + probe_address -= probe_decrement; + if ((int)probe_address < 0) { + probe_address += PACKAGE_HASH_PRIME; + } + } + return(probe_address); +} + +/* + * Create one new node and one new edge for every dependency. + */ +void add_split_dependencies(common_node_t *parent_node, const char *whole_line, unsigned int edge_type) +{ + char *line = xstrdup(whole_line); + char *line2; + char *line_ptr1 = NULL; + char *line_ptr2 = NULL; + char *field; + char *field2; + char *version; + edge_t *edge; + int offset_ch; + int type; + + field = strtok_r(line, ",", &line_ptr1); + do { + line2 = xstrdup(field); + field2 = strtok_r(line2, "|", &line_ptr2); + if ((edge_type == EDGE_DEPENDS) && (strcmp(field, field2) != 0)) { + type = EDGE_OR_DEPENDS; + } + else if ((edge_type == EDGE_PRE_DEPENDS) && (strcmp(field, field2) != 0)) { + type = EDGE_OR_PRE_DEPENDS; + } else { + type = edge_type; + } + + do { + edge = (edge_t *) xmalloc(sizeof(edge_t)); + edge->type = type; + + /* Skip any extra leading spaces */ + field2 += strspn(field2, " "); + + /* Get dependency version info */ + version = strchr(field2, '('); + if (version == NULL) { + edge->operator = VER_ANY; + /* Get the versions hash number, adding it if the number isnt already in there */ + edge->version = search_name_hashtable("ANY"); + } else { + /* Skip leading ' ' or '(' */ + version += strspn(field2, " "); + version += strspn(version, "("); + /* Calculate length of any operator charactors */ + offset_ch = strspn(version, "<=>"); + /* Determine operator */ + if (offset_ch > 0) { + if (strncmp(version, "=", offset_ch) == 0) { + edge->operator = VER_EQUAL; + } + else if (strncmp(version, "<<", offset_ch) == 0) { + edge->operator = VER_LESS; + } + else if (strncmp(version, "<=", offset_ch) == 0) { + edge->operator = VER_LESS_EQUAL; + } + else if (strncmp(version, ">>", offset_ch) == 0) { + edge->operator = VER_MORE; + } + else if (strncmp(version, ">=", offset_ch) == 0) { + edge->operator = VER_MORE_EQUAL; + } else { + error_msg_and_die("Illegal operator\n"); + } + } + /* skip to start of version numbers */ + version += offset_ch; + version += strspn(version, " "); + + /* Truncate version at trailing ' ' or ')' */ + version[strcspn(version, " )")] = '\0'; + /* Get the versions hash number, adding it if the number isnt already in there */ + edge->version = search_name_hashtable(version); + } + + /* Get the dependency name */ + field2[strcspn(field2, " (")] = '\0'; + edge->name = search_name_hashtable(field2); - /* go through status hash, dereference package hash and finally strings */ - for (i = 0; i < node_hash_prime; i++) { - node_t *node = get_node_ht(i); + /* link the new edge to the current node */ + parent_node->num_of_edges++; + parent_node->edge = xrealloc(parent_node->edge, sizeof(edge_t) * (parent_node->num_of_edges + 1)); + parent_node->edge[parent_node->num_of_edges - 1] = edge; + } while ((field2 = strtok_r(NULL, "|", &line_ptr2)) != NULL); + free(line2); + } while ((field = strtok_r(NULL, ",", &line_ptr1)) != NULL); + free(line); + + return; +} + +void free_package(common_node_t *node) +{ + int i; + if (node != NULL) { + for (i = 0; i < node->num_of_edges; i++) { + if (node->edge[i] != NULL) { + free(node->edge[i]); + } + } + if (node->edge != NULL) { + free(node->edge); + } if (node != NULL) { - char *name_str = get_name_ht(node->name); - char *ver_rev; - char want_flag; - char status_flag; + free(node); + } + } +} + +unsigned int fill_package_struct(char *control_buffer) +{ + common_node_t *new_node = (common_node_t *) xcalloc(1, sizeof(common_node_t)); + + char *field_name; + char *field_value; + int field_start = 0; + int num = -1; + int buffer_length = strlen(control_buffer); + + new_node->version = search_name_hashtable("unknown"); + while (field_start < buffer_length) { + field_start += read_package_field(&control_buffer[field_start], + &field_name, &field_value); + + if (field_name == NULL) { + goto fill_package_struct_cleanup; // Oh no, the dreaded goto statement !! + } + + if (strcmp(field_name, "Package") == 0) { + new_node->name = search_name_hashtable(field_value); + } + else if (strcmp(field_name, "Version") == 0) { + new_node->version = search_name_hashtable(field_value); + } + else if (strcmp(field_name, "Pre-Depends") == 0) { + add_split_dependencies(new_node, field_value, EDGE_PRE_DEPENDS); + } + else if (strcmp(field_name, "Depends") == 0) { + add_split_dependencies(new_node, field_value, EDGE_DEPENDS); + } + else if (strcmp(field_name, "Replaces") == 0) { + add_split_dependencies(new_node, field_value, EDGE_REPLACES); + } + else if (strcmp(field_name, "Provides") == 0) { + add_split_dependencies(new_node, field_value, EDGE_PROVIDES); + } + else if (strcmp(field_name, "Conflicts") == 0) { + add_split_dependencies(new_node, field_value, EDGE_CONFLICTS); + } + else if (strcmp(field_name, "Suggests") == 0) { + add_split_dependencies(new_node, field_value, EDGE_SUGGESTS); + } + else if (strcmp(field_name, "Recommends") == 0) { + add_split_dependencies(new_node, field_value, EDGE_RECOMMENDS); + } + else if (strcmp(field_name, "Enhances") == 0) { + add_split_dependencies(new_node, field_value, EDGE_ENHANCES); + } +fill_package_struct_cleanup: + if (field_name) { + free(field_name); + } + if (field_value) { + free(field_value); + } + } + + if (new_node->version == search_name_hashtable("unknown")) { + free_package(new_node); + return(-1); + } + num = search_package_hashtable(new_node->name, new_node->version, VER_EQUAL); + if (package_hashtable[num] == NULL) { + package_hashtable[num] = new_node; + } else { + free_package(new_node); + } + return(num); +} - ver_rev = version_revision(node->version, node->revision); - if (strlen(ver_rev) > 14) { - ver_rev[14] = '\0'; +/* if num = 1, it returns the want status, 2 returns flag, 3 returns status */ +unsigned int get_status(const unsigned int status_node, const int num) +{ + char *status_string = name_hashtable[status_hashtable[status_node]->status]; + char *state_sub_string; + unsigned int state_sub_num; + int len; + int i; + + /* set tmp_string to point to the start of the word number */ + for (i = 1; i < num; i++) { + /* skip past a word */ + status_string += strcspn(status_string, " "); + /* skip past the seperating spaces */ + status_string += strspn(status_string, " "); + } + len = strcspn(status_string, " \n\0"); + state_sub_string = xstrndup(status_string, len); + state_sub_num = search_name_hashtable(state_sub_string); + free(state_sub_string); + return(state_sub_num); +} + +void set_status(const unsigned int status_node_num, const char *new_value, const int position) +{ + const unsigned int new_value_len = strlen(new_value); + const unsigned int new_value_num = search_name_hashtable(new_value); + unsigned int want = get_status(status_node_num, 1); + unsigned int flag = get_status(status_node_num, 2); + unsigned int status = get_status(status_node_num, 3); + int want_len = strlen(name_hashtable[want]); + int flag_len = strlen(name_hashtable[flag]); + int status_len = strlen(name_hashtable[status]); + char *new_status; + + switch (position) { + case (1): + want = new_value_num; + want_len = new_value_len; + break; + case (2): + flag = new_value_num; + flag_len = new_value_len; + break; + case (3): + status = new_value_num; + status_len = new_value_len; + break; + default: + error_msg_and_die("DEBUG ONLY: this shouldnt happen"); + } + + new_status = (char *) xmalloc(want_len + flag_len + status_len + 3); + sprintf(new_status, "%s %s %s", name_hashtable[want], name_hashtable[flag], name_hashtable[status]); + status_hashtable[status_node_num]->status = search_name_hashtable(new_status); + free(new_status); + return; +} + +void index_status_file(const char *filename) +{ + FILE *status_file; + char *control_buffer; + char *status_line; + status_node_t *status_node = NULL; + unsigned int status_num; + + status_file = xfopen(filename, "r"); + while ((control_buffer = fgets_str(status_file, "\n\n")) != NULL) { + const unsigned int package_num = fill_package_struct(control_buffer); + if (package_num != -1) { + status_node = xmalloc(sizeof(status_node_t)); + /* fill_package_struct doesnt handle the status field */ + status_line = strstr(control_buffer, "Status:"); + if (status_line != NULL) { + status_line += 7; + status_line += strspn(status_line, " \n\t"); + status_line = xstrndup(status_line, strcspn(status_line, "\n\0")); + status_node->status = search_name_hashtable(status_line); + free(status_line); } + status_node->package = package_num; + status_num = search_status_hashtable(name_hashtable[package_hashtable[status_node->package]->name]); + status_hashtable[status_num] = status_node; + } + free(control_buffer); + } + fclose(status_file); + return; +} - switch (node->state_want) { - case(STATE_WANT_HOLD): - want_flag = 'h'; - break; - case(STATE_WANT_INSTALL): - want_flag = 'i'; - break; - case(STATE_WANT_DEINSTALL): - want_flag = 'r'; - break; - case(STATE_WANT_PURGE): - want_flag = 'p'; - break; - default: - want_flag = '?'; + +char *get_depends_field(common_node_t *package, const int depends_type) +{ + char *depends = NULL; + char *old_sep = (char *)xcalloc(1, 3); + char *new_sep = (char *)xcalloc(1, 3); + int line_size = 0; + int depends_size; + + int i; + + for (i = 0; i < package->num_of_edges; i++) { + if ((package->edge[i]->type == EDGE_OR_PRE_DEPENDS) || + (package->edge[i]->type == EDGE_OR_DEPENDS)) { + } + + if ((package->edge[i]->type == depends_type) || + (package->edge[i]->type == depends_type + 1)) { + /* Check if its the first time through */ + + depends_size = 8 + strlen(name_hashtable[package->edge[i]->name]) + + strlen(name_hashtable[package->edge[i]->version]); + line_size += depends_size; + depends = (char *) xrealloc(depends, line_size + 1); + + /* Check to see if this dependency is the type we are looking for + * +1 to check for 'extra' types, e.g. ored dependecies */ + strcpy(old_sep, new_sep); + if (package->edge[i]->type == depends_type) { + strcpy(new_sep, ", "); } - switch(node->state_status) { - case(STATE_STATUS_NOTINSTALLED): - status_flag = 'n'; - break; - case(STATE_STATUS_UNPACKED): - status_flag = 'u'; - break; - case(STATE_STATUS_HALFCONFIGURED): - status_flag = 'h'; - break; - case(STATE_STATUS_INSTALLED): - status_flag = 'i'; + else if (package->edge[i]->type == depends_type + 1) { + strcpy(new_sep, "| "); + } + + if (depends_size == line_size) { + strcpy(depends, ""); + } else { + if ((strcmp(old_sep, "| ") == 0) && (strcmp(new_sep, "| ") == 0)) { + strcat(depends, " | "); + } else { + strcat(depends, ", "); + } + } + + strcat(depends, name_hashtable[package->edge[i]->name]); + if (strcmp(name_hashtable[package->edge[i]->version], "NULL") != 0) { + if (package->edge[i]->operator == VER_EQUAL) { + strcat(depends, " (= "); + } + else if (package->edge[i]->operator == VER_LESS) { + strcat(depends, " (<< "); + } + else if (package->edge[i]->operator == VER_LESS_EQUAL) { + strcat(depends, " (<= "); + } + else if (package->edge[i]->operator == VER_MORE) { + strcat(depends, " (>> "); + } + else if (package->edge[i]->operator == VER_MORE_EQUAL) { + strcat(depends, " (>= "); + } else { + strcat(depends, " ("); + } + strcat(depends, name_hashtable[package->edge[i]->version]); + strcat(depends, ")"); + } + } + } + return(depends); +} + +void write_buffer_no_status(FILE *new_status_file, const char *control_buffer) +{ + char *name; + char *value; + int start = 0; + while (1) { + start += read_package_field(&control_buffer[start], &name, &value); + if (name == NULL) { + break; + } + if (strcmp(name, "Status") != 0) { + fprintf(new_status_file, "%s: %s\n", name, value); + } + } + return; +} + +/* This could do with a cleanup */ +void write_status_file(deb_file_t **deb_file) +{ + FILE *old_status_file = xfopen("/var/lib/dpkg/status", "r"); + FILE *new_status_file = xfopen("/var/lib/dpkg/status.udeb", "w"); + char *package_name; + char *status_from_file; + char *control_buffer = NULL; + char *tmp_string; + int status_num; + int field_start = 0; + int write_flag; + int i = 0; + + /* Update previously known packages */ + while ((control_buffer = fgets_str(old_status_file, "\n\n")) != NULL) { + if ((tmp_string = strstr(control_buffer, "Package:")) == NULL) { + continue; + } + + tmp_string += 8; + tmp_string += strspn(tmp_string, " \n\t"); + package_name = xstrndup(tmp_string, strcspn(tmp_string, "\n\0")); + write_flag = FALSE; + tmp_string = strstr(control_buffer, "Status:"); + if (tmp_string != NULL) { + /* Seperate the status value from the control buffer */ + tmp_string += 7; + tmp_string += strspn(tmp_string, " \n\t"); + status_from_file = xstrndup(tmp_string, strcspn(tmp_string, "\n")); + } else { + status_from_file = NULL; + } + + /* Find this package in the status hashtable */ + status_num = search_status_hashtable(package_name); + if (status_hashtable[status_num] != NULL) { + const char *status_from_hashtable = name_hashtable[status_hashtable[status_num]->status]; + if (strcmp(status_from_file, status_from_hashtable) != 0) { + /* New status isnt exactly the same as old status */ + const int state_status = get_status(status_num, 3); + if ((strcmp("installed", name_hashtable[state_status]) == 0) || + (strcmp("unpacked", name_hashtable[state_status]) == 0)) { + /* We need to add the control file from the package */ + i = 0; + while(deb_file[i] != NULL) { + if (strcmp(package_name, name_hashtable[package_hashtable[deb_file[i]->package]->name]) == 0) { + /* Write a status file entry with a modified status */ + /* remove trailing \n's */ + write_buffer_no_status(new_status_file, deb_file[i]->control_file); + set_status(status_num, "ok", 2); + fprintf(new_status_file, "Status: %s\n\n", name_hashtable[status_hashtable[status_num]->status]); + write_flag = TRUE; + break; + } + i++; + } + /* This is temperary, debugging only */ + if (deb_file[i] == NULL) { + error_msg_and_die("ALERT: Couldnt find a control file, your status file may be broken, status may be incorrect for %s", package_name); + } + } + else if (strcmp("not-installed", name_hashtable[state_status]) == 0) { + /* Only write the Package, Status, Priority and Section lines */ + fprintf(new_status_file, "Package: %s\n", package_name); + fprintf(new_status_file, "Status: %s\n", status_from_hashtable); + + while (1) { + char *field_name; + char *field_value; + field_start += read_package_field(&control_buffer[field_start], &field_name, &field_value); + if (field_name == NULL) { + break; + } + if ((strcmp(field_name, "Priority") == 0) || + (strcmp(field_name, "Section") == 0)) { + fprintf(new_status_file, "%s: %s\n", field_name, field_value); + } + } + write_flag = TRUE; + fputs("\n", new_status_file); + } + else if (strcmp("config-files", name_hashtable[state_status]) == 0) { + /* only change the status line */ + while (1) { + char *field_name; + char *field_value; + field_start += read_package_field(&control_buffer[field_start], &field_name, &field_value); + if (field_name == NULL) { + break; + } + /* Setup start point for next field */ + if (strcmp(field_name, "Status") == 0) { + fprintf(new_status_file, "Status: %s\n", status_from_hashtable); + } else { + fprintf(new_status_file, "%s: %s\n", field_name, field_value); + } + } + write_flag = TRUE; + fputs("\n", new_status_file); + } + } + } + /* If the package from the status file wasnt handle above, do it now*/ + if (write_flag == FALSE) { + fprintf(new_status_file, "%s\n\n", control_buffer); + } + + if (status_from_file != NULL) { + free(status_from_file); + } + free(package_name); + free(control_buffer); + } + + /* Write any new packages */ + for(i = 0; deb_file[i] != NULL; i++) { + status_num = search_status_hashtable(name_hashtable[package_hashtable[deb_file[i]->package]->name]); + if (strcmp("reinstreq", name_hashtable[get_status(status_num, 2)]) == 0) { + write_buffer_no_status(new_status_file, deb_file[i]->control_file); + set_status(status_num, "ok", 2); + fprintf(new_status_file, "Status: %s\n\n", name_hashtable[status_hashtable[status_num]->status]); + } + } + fclose(old_status_file); + fclose(new_status_file); + + + /* Create a seperate backfile to dpkg */ + if (rename("/var/lib/dpkg/status", "/var/lib/dpkg/status.udeb.bak") == -1) { + struct stat stat_buf; + if (stat("/var/lib/dpkg/status", &stat_buf) == 0) { + error_msg_and_die("Couldnt create backup status file"); + } + /* Its ok if renaming the status file fails becasue status + * file doesnt exist, maybe we are starting from scratch */ + error_msg("No status file found, creating new one"); + } + + if (rename("/var/lib/dpkg/status.udeb", "/var/lib/dpkg/status") == -1) { + error_msg_and_die("DANGER: Couldnt create status file, you need to manually repair your status file"); + } +} + +int check_deps(deb_file_t **deb_file, int deb_start, int dep_max_count) +{ + int *conflicts = NULL; + int conflicts_num = 0; + int state_status; + int state_flag; + int state_want; + unsigned int status_package_num; + int i = deb_start; + int j, k; + + /* Check for conflicts + * TODO: TEST if conflicts with other packages to be installed + * + * Add install packages and the packages they provide + * to the list of files to check conflicts for + */ + + /* Create array of package numbers to check against + * installed package for conflicts*/ + while (deb_file[i] != NULL) { + const unsigned int package_num = deb_file[i]->package; + conflicts = xrealloc(conflicts, sizeof(int) * (conflicts_num + 1)); + conflicts[conflicts_num] = package_num; + conflicts_num++; + /* add provides to conflicts list */ + for (j = 0; j < package_hashtable[package_num]->num_of_edges; j++) { + if (package_hashtable[package_num]->edge[j]->type == EDGE_PROVIDES) { + const int conflicts_package_num = search_package_hashtable( + package_hashtable[package_num]->edge[j]->name, + package_hashtable[package_num]->edge[j]->version, + package_hashtable[package_num]->edge[j]->operator); + if (package_hashtable[conflicts_package_num] == NULL) { + /* create a new package */ + common_node_t *new_node = (common_node_t *) xmalloc(sizeof(common_node_t)); + new_node->name = package_hashtable[package_num]->edge[j]->name; + new_node->version = package_hashtable[package_num]->edge[j]->version; + new_node->num_of_edges = 0; + new_node->edge = NULL; + package_hashtable[conflicts_package_num] = new_node; + } + conflicts = xrealloc(conflicts, sizeof(int) * (conflicts_num + 1)); + conflicts[conflicts_num] = conflicts_package_num; + conflicts_num++; + } + } + i++; + } + + /* Check conflicts */ + for (i = 0; i < conflicts_num; i++) { + /* Check for conflicts */ + for (j = 0; j < STATUS_HASH_PRIME; j++) { + if (status_hashtable[j] == NULL) { + continue; + } + state_flag = get_status(j, 2); + state_status = get_status(j, 3); + if ((state_status != search_name_hashtable("installed")) + && (state_flag != search_name_hashtable("want-install"))) { + continue; + } + status_package_num = status_hashtable[j]->package; + for (k = 0; k < package_hashtable[status_package_num]->num_of_edges; k++) { + const edge_t *package_edge = package_hashtable[status_package_num]->edge[k]; + if (package_edge->type != EDGE_CONFLICTS) { + continue; + } + if (package_edge->name != package_hashtable[conflicts[i]]->name) { + continue; + } + /* There is a conflict against the package name + * check if version conflict as well */ + if (test_version(package_hashtable[deb_file[i]->package]->version, + package_edge->version, package_edge->operator)) { + error_msg_and_die("Package %s conflict with %s", + name_hashtable[package_hashtable[deb_file[i]->package]->name], + name_hashtable[package_hashtable[status_package_num]->name]); + } + } + } + } + + /* Check dependendcies */ + i = 0; + while (deb_file[i] != NULL) { + const common_node_t *package_node = package_hashtable[deb_file[i]->package]; + int status_num = 0; + + for (j = 0; j < package_hashtable[deb_file[i]->package]->num_of_edges; j++) { + const edge_t *package_edge = package_node->edge[j]; + const unsigned int package_num = search_package_hashtable(package_edge->name, + package_edge->version, package_edge->operator); + + status_num = search_status_hashtable(name_hashtable[package_hashtable[package_num]->name]); + state_status = get_status(status_num, 3); + state_want = get_status(status_num, 1); + switch (package_edge->type) { + case(EDGE_PRE_DEPENDS): + case(EDGE_OR_PRE_DEPENDS): + /* It must be already installed */ + /* NOTE: This is untested, nothing apropriate in my status file */ + if ((package_hashtable[package_num] == NULL) || (state_status != search_name_hashtable("installed"))) { + error_msg_and_die("Package %s pre-depends on %s, but it is not installed", + name_hashtable[package_node->name], + name_hashtable[package_edge->name]); + } break; - case(STATE_STATUS_HALFINSTALLED): - status_flag = 'h'; + case(EDGE_DEPENDS): + case(EDGE_OR_DEPENDS): + /* It must be already installed, or to be installed */ + if ((package_hashtable[package_num] == NULL) || + ((state_status != search_name_hashtable("installed")) && + (state_want != search_name_hashtable("want_install")))) { + error_msg_and_die("Package %s depends on %s, but it is not installed, or flaged to be installed", + name_hashtable[package_node->name], + name_hashtable[package_edge->name]); + } break; - case(STATE_STATUS_CONFIGFILES): - status_flag = 'c'; + } + } + i++; + } + free(conflicts); + return(TRUE); +} + +char **create_list(const char *filename) +{ + FILE *list_stream; + char **file_list = xmalloc(sizeof(char *)); + char *line = NULL; + char *last_char; + int length = 0; + int count = 0; + + /* dont use [xw]fopen here, handle error ourself */ + list_stream = fopen(filename, "r"); + if (list_stream == NULL) { + *file_list = NULL; + return(file_list); + } + while (getline(&line, &length, list_stream) != -1) { + file_list = xrealloc(file_list, sizeof(char *) * (length + 1)); + last_char = last_char_is(line, '\n'); + if (last_char) { + *last_char = '\0'; + } + file_list[count] = xstrdup(line); + count++; + } + fclose(list_stream); + free(line); + + if (count == 0) { + return(NULL); + } else { + file_list[count] = NULL; + return(file_list); + } +} + +/* maybe i should try and hook this into remove_file.c somehow */ +int remove_file_array(char **remove_names, char **exclude_names) +{ + struct stat path_stat; + int match_flag; + int remove_flag = FALSE; + int i,j; + + if (remove_names == NULL) { + return(FALSE); + } + for (i = 0; remove_names[i] != NULL; i++) { + match_flag = FALSE; + if (exclude_names != NULL) { + for (j = 0; exclude_names[j] != 0; j++) { + if (strcmp(remove_names[i], exclude_names[j]) == 0) { + match_flag = TRUE; break; - default: - status_flag = '?'; + } + } + } + if (!match_flag) { + if (lstat(remove_names[i], &path_stat) < 0) { + continue; } + if (S_ISDIR(path_stat.st_mode)) { + if (rmdir(remove_names[i]) != -1) { + remove_flag = TRUE; + } + } else { + if (unlink(remove_names[i]) != -1) { + remove_flag = TRUE; + } + } + } + } + return(remove_flag); +} - /* print out the line formatted like Debian dpkg */ - if ((status_flag != '?') && (want_flag != '?')) { -#ifdef BB_FEATURE_DPKG_LIST_SHORT_DESCRIPTIONS - printf("%c%c %-14s %-14s %s\n", want_flag, status_flag, name_str, ver_rev, node->description_short); -#else - printf("%c%c %-14s %-14s\n", want_flag, status_flag, name_str, ver_rev); -#endif +int run_package_script(const char *package_name, const char *script_type) +{ + struct stat path_stat; + char *script_path; + int result; + + script_path = xmalloc(strlen(package_name) + strlen(script_type) + 21); + sprintf(script_path, "/var/lib/dpkg/info/%s.%s", package_name, script_type); + + /* If the file doesnt exist is isnt a fatal */ + if (lstat(script_path, &path_stat) < 0) { + result = EXIT_SUCCESS; + } else { + result = system(script_path); + } + free(script_path); + return(result); +} + +void all_control_list(char **remove_files, const char *package_name) +{ + const char *all_extensions[11] = {"preinst", "postinst", "prerm", "postrm", + "list", "md5sums", "shlibs", "conffiles", "config", "templates", NULL }; + int i; + + /* Create a list of all /var/lib/dpkg/info/<package> files */ + for(i = 0; i < 10; i++) { + remove_files[i] = xmalloc(strlen(package_name) + strlen(all_extensions[i]) + 21); + sprintf(remove_files[i], "/var/lib/dpkg/info/%s.%s", package_name, all_extensions[i]); + } + remove_files[10] = NULL; +} + + +/* This function lists information on the installed packages. It loops through + * the status_hashtable to retrieve the info. This results in smaller code than + * scanning the status file. The resulting list, however, is unsorted. + */ +void list_packages(void) +{ + int i; + + printf(" Name Version\n"); + printf("+++-==============-==============\n"); + + /* go through status hash, dereference package hash and finally strings */ + for (i=0; i<STATUS_HASH_PRIME+1; i++) { + + if (status_hashtable[i]) { + const char *stat_str; /* status string */ + const char *name_str; /* package name */ + const char *vers_str; /* version */ + char s1, s2; /* status abbreviations */ + int spccnt; /* space count */ + int j; + + stat_str = name_hashtable[status_hashtable[i]->status]; + name_str = name_hashtable[package_hashtable[status_hashtable[i]->package]->name]; + vers_str = name_hashtable[package_hashtable[status_hashtable[i]->package]->version]; + + /* get abbreviation for status field 1 */ + s1 = stat_str[0] == 'i' ? 'i' : 'r'; + + /* get abbreviation for status field 2 */ + for (j=0, spccnt=0; stat_str[j] && spccnt<2; j++) { + if (stat_str[j] == ' ') spccnt++; } - free(ver_rev); + s2 = stat_str[j]; + + /* print out the line formatted like Debian dpkg */ + printf("%c%c %-14s %s\n", s1, s2, name_str, vers_str); } } } -#endif + +void remove_package(const unsigned int package_num) +{ + const char *package_name = name_hashtable[package_hashtable[package_num]->name]; + const unsigned int status_num = search_status_hashtable(package_name); + const int package_name_length = strlen(package_name); + char **remove_files; + char **exclude_files; + char list_name[package_name_length + 25]; + char conffile_name[package_name_length + 30]; + int return_value; + + printf("Removing %s ...\n", package_name); + + /* run prerm script */ + return_value = run_package_script(package_name, "prerm"); + if (return_value == -1) { + error_msg_and_die("script failed, prerm failure"); + } + + /* Create a list of files to remove, and a seperate list of those to keep */ + sprintf(list_name, "/var/lib/dpkg/info/%s.list", package_name); + remove_files = create_list(list_name); + + sprintf(conffile_name, "/var/lib/dpkg/info/%s.conffiles", package_name); + exclude_files = create_list(conffile_name); + + /* Some directories cant be removed straight away, so do multiple passes */ + while (remove_file_array(remove_files, exclude_files) == TRUE); + + /* Create a list of all /var/lib/dpkg/info/<package> files */ + remove_files = xmalloc(11); + all_control_list(remove_files, package_name); + + /* Create a list of files in /var/lib/dpkg/info/<package>.* to keep */ + exclude_files = xmalloc(sizeof(char*) * 3); + exclude_files[0] = xstrdup(conffile_name); + exclude_files[1] = xmalloc(package_name_length + 27); + sprintf(exclude_files[1], "/var/lib/dpkg/info/%s.postrm", package_name); + exclude_files[2] = NULL; + + remove_file_array(remove_files, exclude_files); + + /* rename <package>.conffile to <package>.list */ + rename(conffile_name, list_name); + + /* Change package status */ + set_status(status_num, "deinstall", 1); + set_status(status_num, "config-files", 3); +} + +void purge_package(const unsigned int package_num) +{ + const char *package_name = name_hashtable[package_hashtable[package_num]->name]; + const unsigned int status_num = search_status_hashtable(package_name); + char **remove_files; + char **exclude_files; + char list_name[strlen(package_name) + 25]; + + /* run prerm script */ + if (run_package_script(package_name, "prerm") != 0) { + error_msg_and_die("script failed, prerm failure"); + } + + /* Create a list of files to remove */ + sprintf(list_name, "/var/lib/dpkg/info/%s.list", package_name); + remove_files = create_list(list_name); + + exclude_files = xmalloc(1); + exclude_files[0] = NULL; + + /* Some directories cant be removed straight away, so do multiple passes */ + while (remove_file_array(remove_files, exclude_files) == TRUE); + + /* Create a list of all /var/lib/dpkg/info/<package> files */ + remove_files = xmalloc(11); + all_control_list(remove_files, package_name); + remove_file_array(remove_files, exclude_files); + + /* run postrm script */ + if (run_package_script(package_name, "postrm") == -1) { + error_msg_and_die("postrm fialure.. set status to what?"); + } + + /* Change package status */ + set_status(status_num, "purge", 1); + set_status(status_num, "not-installed", 3); +} + +void unpack_package(deb_file_t *deb_file) +{ + const char *package_name = name_hashtable[package_hashtable[deb_file->package]->name]; + const unsigned int status_num = search_status_hashtable(package_name); + const unsigned int status_package_num = status_hashtable[status_num]->package; + + FILE *out_stream; + char *info_prefix; + + /* If existing version, remove it first */ + if (strcmp(name_hashtable[get_status(status_num, 3)], "installed") == 0) { + /* Package is already installed, remove old version first */ + printf("Preparing to replace %s %s (using %s) ...\n", package_name, + name_hashtable[package_hashtable[status_package_num]->version], + deb_file->filename); + remove_package(status_package_num); + } else { + printf("Unpacking %s (from %s) ...\n", package_name, deb_file->filename); + } + + /* Extract control.tar.gz to /var/lib/dpkg/info/<package>.filename */ + info_prefix = (char *) xmalloc(sizeof(package_name) + 20 + 4 + 1); + sprintf(info_prefix, "/var/lib/dpkg/info/%s.", package_name); + deb_extract(deb_file->filename, stdout, (extract_quiet | extract_control_tar_gz | extract_all_to_fs | extract_unconditional), info_prefix, NULL); + + /* Run the preinst prior to extracting */ + if (run_package_script(package_name, "preinst") != 0) { + /* when preinst returns exit code != 0 then quit installation process */ + error_msg_and_die("subprocess pre-installation script returned error."); + } + + /* Extract data.tar.gz to the root directory */ + deb_extract(deb_file->filename, stdout, (extract_quiet | extract_data_tar_gz | extract_all_to_fs | extract_unconditional), "/", NULL); + + /* Create the list file */ + strcat(info_prefix, "list"); + out_stream = xfopen(info_prefix, "w"); + deb_extract(deb_file->filename, out_stream, (extract_quiet | extract_data_tar_gz | extract_list), "/", NULL); + fclose(out_stream); + + /* change status */ + set_status(status_num, "install", 1); + set_status(status_num, "unpacked", 3); + + free(info_prefix); +} + +void configure_package(deb_file_t *deb_file) +{ + const char *package_name = name_hashtable[package_hashtable[deb_file->package]->name]; + const char *package_version = name_hashtable[package_hashtable[deb_file->package]->version]; + const int status_num = search_status_hashtable(package_name); + + printf("Setting up %s (%s)\n", package_name, package_version); + + /* Run the postinst script */ + if (run_package_script(package_name, "postinst") != 0) { + /* TODO: handle failure gracefully */ + error_msg_and_die("postrm failure.. set status to what?"); + } + /* Change status to reflect success */ + set_status(status_num, "install", 1); + set_status(status_num, "installed", 3); +} extern int dpkg_main(int argc, char **argv) { - deb_file_t **deb_file = xcalloc(1, sizeof(deb_file_t *)); + deb_file_t **deb_file = NULL; + status_node_t *status_node; char opt = 0; + int package_num; int dpkg_opt = 0; int deb_count = 0; + int state_status; + int status_num; int i; - unsigned short state_default_new_want = STATE_WANT_INSTALL; - unsigned short state_default_new_flag = STATE_FLAG_REINSTREQ; - unsigned short state_default_new_status = STATE_STATUS_NOTINSTALLED; - - while ((opt = getopt(argc, argv, -#ifdef BB_FEATURE_DPKG_LIST - "CF:ilPru")) != -1) { -#else - "CF:iPru")) != -1) { -#endif + + while ((opt = getopt(argc, argv, "CF:ilPru")) != -1) { switch (opt) { case 'C': // equivalent to --configure in official dpkg - dpkg_opt |= DPKG_OPT_CONFIGURE | DPKG_OPT_PACKAGENAME; + dpkg_opt |= dpkg_opt_configure; + dpkg_opt |= dpkg_opt_package_name; break; case 'F': // equivalent to --force in official dpkg if (strcmp(optarg, "depends") == 0) { - dpkg_opt |= DPKG_OPT_FORCE_IGNORE_DEPENDS; + dpkg_opt |= dpkg_opt_force_ignore_depends; } case 'i': - dpkg_opt |= DPKG_OPT_INSTALL | DPKG_OPT_FILENAME; + dpkg_opt |= dpkg_opt_install; + dpkg_opt |= dpkg_opt_filename; break; -#ifdef BB_FEATURE_DPKG_LIST case 'l': - dpkg_opt |= DPKG_OPT_LIST_INSTALLED; + dpkg_opt |= dpkg_opt_list_installed; break; -#endif case 'P': - dpkg_opt |= DPKG_OPT_PURGE | DPKG_OPT_PACKAGENAME; - state_default_new_want = STATE_WANT_PURGE; + dpkg_opt |= dpkg_opt_purge; + dpkg_opt |= dpkg_opt_package_name; break; case 'r': - dpkg_opt |= DPKG_OPT_REMOVE | DPKG_OPT_PACKAGENAME; - state_default_new_want = STATE_WANT_DEINSTALL; + dpkg_opt |= dpkg_opt_remove; + dpkg_opt |= dpkg_opt_package_name; break; case 'u': /* Equivalent to --unpack in official dpkg */ - dpkg_opt |= DPKG_OPT_UNPACK | DPKG_OPT_FILENAME; + dpkg_opt |= dpkg_opt_unpack; + dpkg_opt |= dpkg_opt_filename; break; default: show_usage(); } } - /* check for non-otion argument if expected */ - if ((dpkg_opt == 0) || ((dpkg_opt & DPKG_OPT_FILENAME) && (dpkg_opt & DPKG_OPT_PACKAGENAME))) { + if ((dpkg_opt == 0) || ((argc == optind) && !(dpkg_opt && dpkg_opt_list_installed))) { show_usage(); } - deb_initialise_hashtables(1); +/* puts("(Reading database ... xxxxx files and directories installed.)"); */ index_status_file("/var/lib/dpkg/status"); -#ifdef BB_FEATURE_DPKG_LIST /* if the list action was given print the installed packages and exit */ - if (dpkg_opt & DPKG_OPT_LIST_INSTALLED) { + if (dpkg_opt & dpkg_opt_list_installed) { list_packages(); + return(EXIT_SUCCESS); } -#endif - + /* Read arguments and store relevant info in structs */ + deb_file = xmalloc(sizeof(deb_file_t)); while (optind < argc) { - const char *arg_name = argv[optind]; - unsigned int node_num; - deb_file_t *tmp; - node_t *node; - - tmp = (deb_file_t *) xcalloc(sizeof(deb_file_t), 1); - - if (dpkg_opt & DPKG_OPT_FILENAME) { - tmp->filename = xstrdup(arg_name); - /* Extract the control file */ - tmp->control_file = deb_extract(arg_name, stdout, (extract_control_tar_gz | extract_one_to_buffer), NULL, "./control"); - if (tmp->control_file == NULL) { - error_msg("Couldnt extract control file from, ignoring package %s", arg_name); - optind++; - free(tmp->filename); - free(tmp); - continue; + deb_file[deb_count] = (deb_file_t *) xmalloc(sizeof(deb_file_t)); + if (dpkg_opt & dpkg_opt_filename) { + deb_file[deb_count]->filename = xstrdup(argv[optind]); + deb_file[deb_count]->control_file = deb_extract(argv[optind], stdout, (extract_control_tar_gz | extract_one_to_buffer), NULL, "./control"); + if (deb_file[deb_count]->control_file == NULL) { + error_msg_and_die("Couldnt extract control file"); } - node = parse_package_metadata(tmp->control_file); + package_num = fill_package_struct(deb_file[deb_count]->control_file); - if (node == NULL) { - error_msg_and_die("node was null\n"); - } else { - node_num = search_node_ht(node, CMP_ANY); - node->state_want = state_default_new_want; - node->state_flag = state_default_new_flag; - node->state_status = state_default_new_status; + if (package_num == -1) { + error_msg("Invalid control file in %s", argv[optind]); + continue; + } + deb_file[deb_count]->package = (unsigned int) package_num; + /* Add the package to the status hashtable */ + if ((dpkg_opt & dpkg_opt_unpack) || (dpkg_opt & dpkg_opt_install)) { + status_node = (status_node_t *) xmalloc(sizeof(status_node_t)); + status_node->package = deb_file[deb_count]->package; - if (get_node_ht(node_num) == NULL) { - printf("Selecting previously deselected package %s\n", get_name_ht(node->name)); + /* Try and find a currently installed version of this package */ + status_num = search_status_hashtable(name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]); + /* If no previous entry was found initialise a new entry */ + if ((status_hashtable[status_num] == NULL) || + (status_hashtable[status_num]->status == 0)) { + /* reinstreq isnt changed to "ok" until the package control info + * is written to the status file*/ + status_node->status = search_name_hashtable("install reinstreq not-installed"); + status_hashtable[status_num] = status_node; + } else { + status_hashtable[status_num]->status = search_name_hashtable("install reinstreq installed"); } - add_node(node, node_num); } - } else { - /* It must be a package name */ - node = initialise_node(arg_name); - node_num = search_node_ht(node, CMP_ANY); - free_node(node); - - node = get_node_ht(node_num); - if (node == NULL) { - error_msg_and_die("Package %s is uninstalled or unknown\n", arg_name); + } + else if (dpkg_opt & dpkg_opt_package_name) { + deb_file[deb_count]->filename = NULL; + deb_file[deb_count]->control_file = NULL; + deb_file[deb_count]->package = search_package_hashtable( + search_name_hashtable(argv[optind]), + search_name_hashtable("ANY"), VER_ANY); + if (package_hashtable[deb_file[deb_count]->package] == NULL) { + error_msg_and_die("Package %s is uninstalled or unknown\n", argv[optind]); } - - node->state_want = state_default_new_want; + state_status = get_status(search_status_hashtable(name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]), 3); /* check package status is "installed" */ - if (dpkg_opt & DPKG_OPT_REMOVE) { - if ((node->state_status == STATE_STATUS_NOTINSTALLED) || - (node->state_status == STATE_STATUS_CONFIGFILES)) { - error_msg_and_die("%s is already removed.", arg_name); + if (dpkg_opt & dpkg_opt_remove) { + if ((strcmp(name_hashtable[state_status], "not-installed") == 0) || + (strcmp(name_hashtable[state_status], "config-files") == 0)) { + error_msg_and_die("%s is already removed.", name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]); } } - else if (dpkg_opt & DPKG_OPT_PURGE) { - if (node->state_status == STATE_STATUS_NOTINSTALLED) { - error_msg_and_die("%s is already purged.", arg_name); + else if (dpkg_opt & dpkg_opt_purge) { + /* if package status is "conf-files" then its ok */ + if (strcmp(name_hashtable[state_status], "not-installed") == 0) { + error_msg_and_die("%s is already purged.", name_hashtable[package_hashtable[deb_file[deb_count]->package]->name]); } } } - - tmp->node = node_num; - deb_file = realloc(deb_file, sizeof(deb_file_t) * (deb_count + 1)); - deb_file[deb_count] = tmp; - deb_count++; - deb_file[deb_count] = NULL; - optind++; } + deb_file[deb_count] = NULL; -#if 0 /* Check that the deb file arguments are installable */ /* TODO: check dependencies before removing */ if ((dpkg_opt & dpkg_opt_force_ignore_depends) != dpkg_opt_force_ignore_depends) { - /* */ - for (i = 0; i < deb_count; i++) { - /* add filename to list */ + if (!check_deps(deb_file, 0, deb_count)) { + error_msg_and_die("Dependency check failed"); } - - /* Sort packages into groups and add dependencies */ - find_deps(package_name); - - /* Check all packages in groups and sub groups are installed */ } -#endif + for (i = 0; i < deb_count; i++) { /* Remove or purge packages */ - if (dpkg_opt & DPKG_OPT_REMOVE) { - remove_package(deb_file[i]->node); + if (dpkg_opt & dpkg_opt_remove) { + remove_package(deb_file[i]->package); } - else if (dpkg_opt & DPKG_OPT_PURGE) { - purge_package(deb_file[i]->node); + else if (dpkg_opt & dpkg_opt_purge) { + purge_package(deb_file[i]->package); } - else if (dpkg_opt & DPKG_OPT_UNPACK) { + else if (dpkg_opt & dpkg_opt_unpack) { unpack_package(deb_file[i]); } - else if (dpkg_opt & DPKG_OPT_INSTALL) { + else if (dpkg_opt & dpkg_opt_install) { unpack_package(deb_file[i]); configure_package(deb_file[i]); } - else if (dpkg_opt & DPKG_OPT_CONFIGURE) { + else if (dpkg_opt & dpkg_opt_configure) { configure_package(deb_file[i]); } } write_status_file(deb_file); - if (deb_file != NULL) { - for (i = 0; i < deb_count; i++) { - free(deb_file[i]->control_file); - free(deb_file[i]->filename); - free(deb_file[i]); + for (i = 0; i < deb_count; i++) { + free(deb_file[i]->control_file); + free(deb_file[i]->filename); + free(deb_file[i]); + } + free(deb_file); + + for (i = 0; i < NAME_HASH_PRIME; i++) { + if (name_hashtable[i] != NULL) { + free(name_hashtable[i]); + } + } + + for (i = 0; i < PACKAGE_HASH_PRIME; i++) { + free_package(package_hashtable[i]); + } + + for (i = 0; i < STATUS_HASH_PRIME; i++) { + if (status_hashtable[i] != NULL) { + free(status_hashtable[i]); } - free(deb_file); } - free_hashtables(); return(EXIT_SUCCESS); } |