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-rw-r--r--archival/rpm.c289
1 files changed, 168 insertions, 121 deletions
diff --git a/archival/rpm.c b/archival/rpm.c
index 2ef7232..c0a1dee 100644
--- a/archival/rpm.c
+++ b/archival/rpm.c
@@ -10,44 +10,44 @@
#include "busybox.h"
#include "unarchive.h"
-#define RPM_HEADER_MAGIC "\216\255\350"
-#define RPM_CHAR_TYPE 1
-#define RPM_INT8_TYPE 2
-#define RPM_INT16_TYPE 3
-#define RPM_INT32_TYPE 4
-/* #define RPM_INT64_TYPE 5 ---- These aren't supported (yet) */
-#define RPM_STRING_TYPE 6
-#define RPM_BIN_TYPE 7
-#define RPM_STRING_ARRAY_TYPE 8
-#define RPM_I18NSTRING_TYPE 9
+#define RPM_HEADER_MAGIC "\216\255\350"
+#define RPM_CHAR_TYPE 1
+#define RPM_INT8_TYPE 2
+#define RPM_INT16_TYPE 3
+#define RPM_INT32_TYPE 4
+/* #define RPM_INT64_TYPE 5 ---- These aren't supported (yet) */
+#define RPM_STRING_TYPE 6
+#define RPM_BIN_TYPE 7
+#define RPM_STRING_ARRAY_TYPE 8
+#define RPM_I18NSTRING_TYPE 9
-#define RPMTAG_NAME 1000
-#define RPMTAG_VERSION 1001
-#define RPMTAG_RELEASE 1002
-#define RPMTAG_SUMMARY 1004
-#define RPMTAG_DESCRIPTION 1005
-#define RPMTAG_BUILDTIME 1006
-#define RPMTAG_BUILDHOST 1007
-#define RPMTAG_SIZE 1009
-#define RPMTAG_VENDOR 1011
-#define RPMTAG_LICENSE 1014
-#define RPMTAG_PACKAGER 1015
-#define RPMTAG_GROUP 1016
-#define RPMTAG_URL 1020
-#define RPMTAG_PREIN 1023
-#define RPMTAG_POSTIN 1024
-#define RPMTAG_FILEFLAGS 1037
-#define RPMTAG_FILEUSERNAME 1039
-#define RPMTAG_FILEGROUPNAME 1040
-#define RPMTAG_SOURCERPM 1044
-#define RPMTAG_PREINPROG 1085
-#define RPMTAG_POSTINPROG 1086
-#define RPMTAG_PREFIXS 1098
-#define RPMTAG_DIRINDEXES 1116
-#define RPMTAG_BASENAMES 1117
-#define RPMTAG_DIRNAMES 1118
-#define RPMFILE_CONFIG (1 << 0)
-#define RPMFILE_DOC (1 << 1)
+#define TAG_NAME 1000
+#define TAG_VERSION 1001
+#define TAG_RELEASE 1002
+#define TAG_SUMMARY 1004
+#define TAG_DESCRIPTION 1005
+#define TAG_BUILDTIME 1006
+#define TAG_BUILDHOST 1007
+#define TAG_SIZE 1009
+#define TAG_VENDOR 1011
+#define TAG_LICENSE 1014
+#define TAG_PACKAGER 1015
+#define TAG_GROUP 1016
+#define TAG_URL 1020
+#define TAG_PREIN 1023
+#define TAG_POSTIN 1024
+#define TAG_FILEFLAGS 1037
+#define TAG_FILEUSERNAME 1039
+#define TAG_FILEGROUPNAME 1040
+#define TAG_SOURCERPM 1044
+#define TAG_PREINPROG 1085
+#define TAG_POSTINPROG 1086
+#define TAG_PREFIXS 1098
+#define TAG_DIRINDEXES 1116
+#define TAG_BASENAMES 1117
+#define TAG_DIRNAMES 1118
+#define RPMFILE_CONFIG (1 << 0)
+#define RPMFILE_DOC (1 << 1)
enum rpm_functions_e {
rpm_query = 1,
@@ -73,7 +73,7 @@ static int tagcount;
static void extract_cpio_gz(int fd);
static rpm_index **rpm_gettags(int fd, int *num_tags);
static int bsearch_rpmtag(const void *key, const void *item);
-static char *rpm_getstring(int tag, int itemindex);
+static char *rpm_getstr(int tag, int itemindex);
static int rpm_getint(int tag, int itemindex);
static int rpm_getcount(int tag);
static void fileaction_dobackup(char *filename, int fileref);
@@ -83,28 +83,29 @@ static void loop_through_files(int filetag, void (*fileaction)(char *filename, i
int rpm_main(int argc, char **argv)
{
int opt = 0, func = 0, rpm_fd, offset;
+ const int pagesize = getpagesize();
while ((opt = getopt(argc, argv, "iqpldc")) != -1) {
switch (opt) {
- case 'i': // First arg: Install mode, with q: Information
- if (!func) func |= rpm_install;
+ case 'i': /* First arg: Install mode, with q: Information */
+ if (!func) func = rpm_install;
else func |= rpm_query_info;
break;
- case 'q': // First arg: Query mode
- if (!func) func |= rpm_query;
- else bb_show_usage();
+ case 'q': /* First arg: Query mode */
+ if (func) bb_show_usage();
+ func = rpm_query;
break;
- case 'p': // Query a package
+ case 'p': /* Query a package */
func |= rpm_query_package;
break;
- case 'l': // List files in a package
+ case 'l': /* List files in a package */
func |= rpm_query_list;
break;
- case 'd': // List doc files in a package (implies list)
+ case 'd': /* List doc files in a package (implies list) */
func |= rpm_query_list;
func |= rpm_query_list_doc;
break;
- case 'c': // List config files in a package (implies list)
+ case 'c': /* List config files in a package (implies list) */
func |= rpm_query_list;
func |= rpm_query_list_config;
break;
@@ -112,57 +113,73 @@ int rpm_main(int argc, char **argv)
bb_show_usage();
}
}
+ argv += optind;
+ argc -= optind;
+ if (!argc) bb_show_usage();
+
+ while (*argv) {
+ rpm_fd = xopen(*argv++, O_RDONLY);
+ mytags = rpm_gettags(rpm_fd, &tagcount);
+ if (!mytags)
+ bb_error_msg_and_die("error reading rpm header");
+ offset = xlseek(rpm_fd, 0, SEEK_CUR);
+ /* Mimimum is one page */
+ map = mmap(0, offset > pagesize ? (offset + offset % pagesize) : pagesize, PROT_READ, MAP_PRIVATE, rpm_fd, 0);
- if (optind == argc) bb_show_usage();
- while (optind < argc) {
- rpm_fd = xopen(argv[optind], O_RDONLY);
- mytags = rpm_gettags(rpm_fd, (int *) &tagcount);
- offset = lseek(rpm_fd, 0, SEEK_CUR);
- if (!mytags) { printf("Error reading rpm header\n"); exit(-1); }
- map = mmap(0, offset > getpagesize() ? (offset + offset % getpagesize()) : getpagesize(), PROT_READ, MAP_PRIVATE, rpm_fd, 0); // Mimimum is one page
if (func & rpm_install) {
- loop_through_files(RPMTAG_BASENAMES, fileaction_dobackup); /* Backup any config files */
- extract_cpio_gz(rpm_fd); // Extact the archive
- loop_through_files(RPMTAG_BASENAMES, fileaction_setowngrp); /* Set the correct file uid/gid's */
- } else if (func & rpm_query && func & rpm_query_package) {
- if (!((func & rpm_query_info) || (func & rpm_query_list))) { // If just a straight query, just give package name
- printf("%s-%s-%s\n", rpm_getstring(RPMTAG_NAME, 0), rpm_getstring(RPMTAG_VERSION, 0), rpm_getstring(RPMTAG_RELEASE, 0));
+ /* Backup any config files */
+ loop_through_files(TAG_BASENAMES, fileaction_dobackup);
+ /* Extact the archive */
+ extract_cpio_gz(rpm_fd);
+ /* Set the correct file uid/gid's */
+ loop_through_files(TAG_BASENAMES, fileaction_setowngrp);
+ }
+ else if ((func & (rpm_query|rpm_query_package)) == (rpm_query|rpm_query_package)) {
+ if (!(func & (rpm_query_info|rpm_query_list))) {
+ /* If just a straight query, just give package name */
+ printf("%s-%s-%s\n", rpm_getstr(TAG_NAME, 0), rpm_getstr(TAG_VERSION, 0), rpm_getstr(TAG_RELEASE, 0));
}
if (func & rpm_query_info) {
/* Do the nice printout */
time_t bdate_time;
struct tm *bdate;
char bdatestring[50];
- printf("Name : %-29sRelocations: %s\n", rpm_getstring(RPMTAG_NAME, 0), rpm_getstring(RPMTAG_PREFIXS, 0) ? rpm_getstring(RPMTAG_PREFIXS, 0) : "(not relocateable)");
- printf("Version : %-34sVendor: %s\n", rpm_getstring(RPMTAG_VERSION, 0), rpm_getstring(RPMTAG_VENDOR, 0) ? rpm_getstring(RPMTAG_VENDOR, 0) : "(none)");
- bdate_time = rpm_getint(RPMTAG_BUILDTIME, 0);
+ printf("Name : %-29sRelocations: %s\n", rpm_getstr(TAG_NAME, 0), rpm_getstr(TAG_PREFIXS, 0) ? rpm_getstr(TAG_PREFIXS, 0) : "(not relocateable)");
+ printf("Version : %-34sVendor: %s\n", rpm_getstr(TAG_VERSION, 0), rpm_getstr(TAG_VENDOR, 0) ? rpm_getstr(TAG_VENDOR, 0) : "(none)");
+ bdate_time = rpm_getint(TAG_BUILDTIME, 0);
bdate = localtime((time_t *) &bdate_time);
strftime(bdatestring, 50, "%a %d %b %Y %T %Z", bdate);
- printf("Release : %-30sBuild Date: %s\n", rpm_getstring(RPMTAG_RELEASE, 0), bdatestring);
- printf("Install date: %-30sBuild Host: %s\n", "(not installed)", rpm_getstring(RPMTAG_BUILDHOST, 0));
- printf("Group : %-30sSource RPM: %s\n", rpm_getstring(RPMTAG_GROUP, 0), rpm_getstring(RPMTAG_SOURCERPM, 0));
- printf("Size : %-33dLicense: %s\n", rpm_getint(RPMTAG_SIZE, 0), rpm_getstring(RPMTAG_LICENSE, 0));
- printf("URL : %s\n", rpm_getstring(RPMTAG_URL, 0));
- printf("Summary : %s\n", rpm_getstring(RPMTAG_SUMMARY, 0));
- printf("Description :\n%s\n", rpm_getstring(RPMTAG_DESCRIPTION, 0));
+ printf("Release : %-30sBuild Date: %s\n", rpm_getstr(TAG_RELEASE, 0), bdatestring);
+ printf("Install date: %-30sBuild Host: %s\n", "(not installed)", rpm_getstr(TAG_BUILDHOST, 0));
+ printf("Group : %-30sSource RPM: %s\n", rpm_getstr(TAG_GROUP, 0), rpm_getstr(TAG_SOURCERPM, 0));
+ printf("Size : %-33dLicense: %s\n", rpm_getint(TAG_SIZE, 0), rpm_getstr(TAG_LICENSE, 0));
+ printf("URL : %s\n", rpm_getstr(TAG_URL, 0));
+ printf("Summary : %s\n", rpm_getstr(TAG_SUMMARY, 0));
+ printf("Description :\n%s\n", rpm_getstr(TAG_DESCRIPTION, 0));
}
if (func & rpm_query_list) {
int count, it, flags;
- count = rpm_getcount(RPMTAG_BASENAMES);
+ count = rpm_getcount(TAG_BASENAMES);
for (it = 0; it < count; it++) {
- flags = rpm_getint(RPMTAG_FILEFLAGS, it);
- switch ((func & rpm_query_list_doc) + (func & rpm_query_list_config))
- {
- case rpm_query_list_doc: if (!(flags & RPMFILE_DOC)) continue; break;
- case rpm_query_list_config: if (!(flags & RPMFILE_CONFIG)) continue; break;
- case rpm_query_list_doc + rpm_query_list_config: if (!((flags & RPMFILE_CONFIG) || (flags & RPMFILE_DOC))) continue; break;
+ flags = rpm_getint(TAG_FILEFLAGS, it);
+ switch (func & (rpm_query_list_doc|rpm_query_list_config)) {
+ case rpm_query_list_doc:
+ if (!(flags & RPMFILE_DOC)) continue;
+ break;
+ case rpm_query_list_config:
+ if (!(flags & RPMFILE_CONFIG)) continue;
+ break;
+ case rpm_query_list_doc|rpm_query_list_config:
+ if (!(flags & (RPMFILE_CONFIG|RPMFILE_DOC))) continue;
+ break;
}
- printf("%s%s\n", rpm_getstring(RPMTAG_DIRNAMES, rpm_getint(RPMTAG_DIRINDEXES, it)), rpm_getstring(RPMTAG_BASENAMES, it));
+ printf("%s%s\n",
+ rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, it)),
+ rpm_getstr(TAG_BASENAMES, it));
}
}
}
- optind++;
- free (mytags);
+ free(mytags);
}
return 0;
}
@@ -186,21 +203,25 @@ static void extract_cpio_gz(int fd) {
bb_error_msg_and_die("invalid gzip magic");
}
check_header_gzip(archive_handle->src_fd);
- xchdir("/"); // Install RPM's to root
+ xchdir("/"); /* Install RPM's to root */
archive_handle->src_fd = open_transformer(archive_handle->src_fd, inflate_gunzip);
archive_handle->offset = 0;
- while (get_header_cpio(archive_handle) == EXIT_SUCCESS);
+ while (get_header_cpio(archive_handle) == EXIT_SUCCESS)
+ /* loop */;
}
static rpm_index **rpm_gettags(int fd, int *num_tags)
{
- rpm_index **tags = xzalloc(200 * sizeof(struct rpmtag *)); /* We should never need mode than 200, and realloc later */
+ /* We should never need mode than 200, and realloc later */
+ rpm_index **tags = xzalloc(200 * sizeof(struct rpmtag *));
int pass, tagindex = 0;
- lseek(fd, 96, SEEK_CUR); /* Seek past the unused lead */
- for (pass = 0; pass < 2; pass++) { /* 1st pass is the signature headers, 2nd is the main stuff */
+ xlseek(fd, 96, SEEK_CUR); /* Seek past the unused lead */
+
+ /* 1st pass is the signature headers, 2nd is the main stuff */
+ for (pass = 0; pass < 2; pass++) {
struct {
char magic[3]; /* 3 byte magic: 0x8e 0xad 0xe8 */
uint8_t version; /* 1 byte version number */
@@ -211,24 +232,31 @@ static rpm_index **rpm_gettags(int fd, int *num_tags)
rpm_index *tmpindex;
int storepos;
- read(fd, &header, sizeof(header));
- if (strncmp((char *) &header.magic, RPM_HEADER_MAGIC, 3) != 0) return NULL; /* Invalid magic */
- if (header.version != 1) return NULL; /* This program only supports v1 headers */
+ xread(fd, &header, sizeof(header));
+ if (strncmp((char *) &header.magic, RPM_HEADER_MAGIC, 3) != 0)
+ return NULL; /* Invalid magic */
+ if (header.version != 1)
+ return NULL; /* This program only supports v1 headers */
header.size = ntohl(header.size);
header.entries = ntohl(header.entries);
- storepos = lseek(fd,0,SEEK_CUR) + header.entries * 16;
+ storepos = xlseek(fd,0,SEEK_CUR) + header.entries * 16;
while (header.entries--) {
tmpindex = tags[tagindex++] = xmalloc(sizeof(rpm_index));
- read(fd, tmpindex, sizeof(rpm_index));
- tmpindex->tag = ntohl(tmpindex->tag); tmpindex->type = ntohl(tmpindex->type); tmpindex->count = ntohl(tmpindex->count);
+ xread(fd, tmpindex, sizeof(rpm_index));
+ tmpindex->tag = ntohl(tmpindex->tag);
+ tmpindex->type = ntohl(tmpindex->type);
+ tmpindex->count = ntohl(tmpindex->count);
tmpindex->offset = storepos + ntohl(tmpindex->offset);
- if (pass==0) tmpindex->tag -= 743;
+ if (pass==0)
+ tmpindex->tag -= 743;
}
- lseek(fd, header.size, SEEK_CUR); /* Seek past store */
- if (pass==0) lseek(fd, (8 - (lseek(fd,0,SEEK_CUR) % 8)) % 8, SEEK_CUR); /* Skip padding to 8 byte boundary after reading signature headers */
+ xlseek(fd, header.size, SEEK_CUR); /* Seek past store */
+ /* Skip padding to 8 byte boundary after reading signature headers */
+ if (pass==0)
+ xlseek(fd, (8 - (xlseek(fd,0,SEEK_CUR) % 8)) % 8, SEEK_CUR);
}
- tags = realloc(tags, tagindex * sizeof(struct rpmtag *)); /* realloc tags to save space */
+ tags = xrealloc(tags, tagindex * sizeof(struct rpmtag *)); /* realloc tags to save space */
*num_tags = tagindex;
return tags; /* All done, leave the file at the start of the gzipped cpio archive */
}
@@ -244,42 +272,59 @@ static int rpm_getcount(int tag)
{
rpm_index **found;
found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
- if (!found) return 0;
- else return found[0]->count;
+ if (!found)
+ return 0;
+ return found[0]->count;
}
-static char *rpm_getstring(int tag, int itemindex)
+static char *rpm_getstr(int tag, int itemindex)
{
rpm_index **found;
found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
- if (!found || itemindex >= found[0]->count) return NULL;
+ if (!found || itemindex >= found[0]->count)
+ return NULL;
if (found[0]->type == RPM_STRING_TYPE || found[0]->type == RPM_I18NSTRING_TYPE || found[0]->type == RPM_STRING_ARRAY_TYPE) {
int n;
char *tmpstr = (char *) (map + found[0]->offset);
- for (n=0; n < itemindex; n++) tmpstr = tmpstr + strlen(tmpstr) + 1;
+ for (n=0; n < itemindex; n++)
+ tmpstr = tmpstr + strlen(tmpstr) + 1;
return tmpstr;
- } else return NULL;
+ }
+ return NULL;
}
static int rpm_getint(int tag, int itemindex)
{
rpm_index **found;
- int n, *tmpint;
+ int *tmpint; /* NB: using int8_t* would be easier to code */
+
/* gcc throws warnings here when sizeof(void*)!=sizeof(int) ...
* it's ok to ignore it because tag won't be used as a pointer */
found = bsearch(&tag, mytags, tagcount, sizeof(struct rpmtag *), bsearch_rpmtag);
- if (!found || itemindex >= found[0]->count) return -1;
+ if (!found || itemindex >= found[0]->count)
+ return -1;
+
tmpint = (int *) (map + found[0]->offset);
+
if (found[0]->type == RPM_INT32_TYPE) {
- for (n=0; n<itemindex; n++) tmpint = (int *) ((void *) tmpint + 4);
- return ntohl(*tmpint);
- } else if (found[0]->type == RPM_INT16_TYPE) {
- for (n=0; n<itemindex; n++) tmpint = (int *) ((void *) tmpint + 2);
- return ntohs(*tmpint);
- } else if (found[0]->type == RPM_INT8_TYPE) {
- for (n=0; n<itemindex; n++) tmpint = (int *) ((void *) tmpint + 1);
- return ntohs(*tmpint);
- } else return -1;
+ tmpint = (int *) ((char *) tmpint + itemindex*4);
+ /*return ntohl(*tmpint);*/
+ /* int can be != int32_t */
+ return ntohl(*(int32_t*)tmpint);
+ }
+ if (found[0]->type == RPM_INT16_TYPE) {
+ tmpint = (int *) ((char *) tmpint + itemindex*2);
+ /* ??? read int, and THEN ntohs() it?? */
+ /*return ntohs(*tmpint);*/
+ return ntohs(*(int16_t*)tmpint);
+ }
+ if (found[0]->type == RPM_INT8_TYPE) {
+ tmpint = (int *) ((char *) tmpint + itemindex);
+ /* ??? why we don't read byte here??? */
+ /*return ntohs(*tmpint);*/
+ return *(int8_t*)tmpint;
+ }
+ return -1;
}
static void fileaction_dobackup(char *filename, int fileref)
@@ -287,9 +332,11 @@ static void fileaction_dobackup(char *filename, int fileref)
struct stat oldfile;
int stat_res;
char *newname;
- if (rpm_getint(RPMTAG_FILEFLAGS, fileref) & RPMFILE_CONFIG) { /* Only need to backup config files */
- stat_res = lstat (filename, &oldfile);
- if (stat_res == 0 && S_ISREG(oldfile.st_mode)) { /* File already exists - really should check MD5's etc to see if different */
+ if (rpm_getint(TAG_FILEFLAGS, fileref) & RPMFILE_CONFIG) {
+ /* Only need to backup config files */
+ stat_res = lstat(filename, &oldfile);
+ if (stat_res == 0 && S_ISREG(oldfile.st_mode)) {
+ /* File already exists - really should check MD5's etc to see if different */
newname = xasprintf("%s.rpmorig", filename);
copy_file(filename, newname, FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS);
remove_file(filename, FILEUTILS_RECUR | FILEUTILS_FORCE);
@@ -301,18 +348,18 @@ static void fileaction_dobackup(char *filename, int fileref)
static void fileaction_setowngrp(char *filename, int fileref)
{
int uid, gid;
- uid = bb_xgetpwnam(rpm_getstring(RPMTAG_FILEUSERNAME, fileref));
- gid = bb_xgetgrnam(rpm_getstring(RPMTAG_FILEGROUPNAME, fileref));
+ uid = bb_xgetpwnam(rpm_getstr(TAG_FILEUSERNAME, fileref));
+ gid = bb_xgetgrnam(rpm_getstr(TAG_FILEGROUPNAME, fileref));
chown(filename, uid, gid);
}
static void loop_through_files(int filetag, void (*fileaction)(char *filename, int fileref))
{
int count = 0;
- while (rpm_getstring(filetag, count)) {
- char * filename = xasprintf("%s%s",
- rpm_getstring(RPMTAG_DIRNAMES, rpm_getint(RPMTAG_DIRINDEXES,
- count)), rpm_getstring(RPMTAG_BASENAMES, count));
+ while (rpm_getstr(filetag, count)) {
+ char* filename = xasprintf("%s%s",
+ rpm_getstr(TAG_DIRNAMES, rpm_getint(TAG_DIRINDEXES, count)),
+ rpm_getstr(TAG_BASENAMES, count));
fileaction(filename, count++);
free(filename);
}
generated by cgit v1.1 at 2024-12-27 11:59:53 +0000