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Diffstat (limited to 'networking')
-rw-r--r--networking/wget.c289
1 files changed, 160 insertions, 129 deletions
diff --git a/networking/wget.c b/networking/wget.c
index 45d428b..76bd5e2 100644
--- a/networking/wget.c
+++ b/networking/wget.c
@@ -15,8 +15,7 @@
struct host_info {
- // May be used if we ever will want to free() all xstrdup()s...
- /* char *allocated; */
+ char *allocated;
const char *path;
const char *user;
char *host;
@@ -34,6 +33,14 @@ struct globals {
const char *curfile; /* Name of current file being transferred */
bb_progress_t pmt;
#endif
+ char *dir_prefix;
+#if ENABLE_FEATURE_WGET_LONG_OPTIONS
+ char *post_data;
+ char *extra_headers;
+#endif
+ char *fname_out; /* where to direct output (-O) */
+ const char *proxy_flag; /* Use proxies if env vars are set */
+ const char *user_agent; /* "User-Agent" header field */
#if ENABLE_FEATURE_WGET_TIMEOUT
unsigned timeout_seconds;
#endif
@@ -87,6 +94,7 @@ static void progress_meter(int flag)
G.chunked ? 0 : G.beg_range + G.transferred + G.content_len);
if (flag == PROGRESS_END) {
+ bb_progress_free(&G.pmt);
bb_putchar_stderr('\n');
G.transferred = 0;
}
@@ -242,11 +250,12 @@ static int ftpcmd(const char *s1, const char *s2, FILE *fp)
return result;
}
-static void parse_url(char *src_url, struct host_info *h)
+static void parse_url(const char *src_url, struct host_info *h)
{
char *url, *p, *sp;
- /* h->allocated = */ url = xstrdup(src_url);
+ free(h->allocated);
+ h->allocated = url = xstrdup(src_url);
if (strncmp(url, "http://", 7) == 0) {
h->port = bb_lookup_port("http", "tcp", 80);
@@ -571,103 +580,36 @@ static void NOINLINE retrieve_file_data(FILE *dfp, int output_fd)
G.got_clen = 1;
}
- G.chunked = 0; /* make progress meter show 100% even for chunked */
+ /* Draw full bar and free its resources */
+ G.chunked = 0; /* makes it show 100% even for chunked download */
progress_meter(PROGRESS_END);
}
-int wget_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int wget_main(int argc UNUSED_PARAM, char **argv)
+static int download_one_url(const char *url)
{
- struct host_info server, target;
- len_and_sockaddr *lsa;
- unsigned opt;
+ bool use_proxy; /* Use proxies if env vars are set */
int redir_limit;
- char *proxy = NULL;
- char *dir_prefix = NULL;
-#if ENABLE_FEATURE_WGET_LONG_OPTIONS
- char *post_data;
- char *extra_headers = NULL;
- llist_t *headers_llist = NULL;
-#endif
+ int output_fd;
+ len_and_sockaddr *lsa;
FILE *sfp; /* socket to web/ftp server */
FILE *dfp; /* socket to ftp server (data) */
- char *fname_out; /* where to direct output (-O) */
- int output_fd = -1;
- bool use_proxy; /* Use proxies if env vars are set */
- const char *proxy_flag = "on"; /* Use proxies if env vars are set */
- const char *user_agent = "Wget";/* "User-Agent" header field */
-
- static const char keywords[] ALIGN1 =
- "content-length\0""transfer-encoding\0""chunked\0""location\0";
- enum {
- KEY_content_length = 1, KEY_transfer_encoding, KEY_chunked, KEY_location
- };
-#if ENABLE_FEATURE_WGET_LONG_OPTIONS
- static const char wget_longopts[] ALIGN1 =
- /* name, has_arg, val */
- "continue\0" No_argument "c"
- "spider\0" No_argument "s"
- "quiet\0" No_argument "q"
- "output-document\0" Required_argument "O"
- "directory-prefix\0" Required_argument "P"
- "proxy\0" Required_argument "Y"
- "user-agent\0" Required_argument "U"
-#if ENABLE_FEATURE_WGET_TIMEOUT
- "timeout\0" Required_argument "T"
-#endif
- /* Ignored: */
- // "tries\0" Required_argument "t"
- /* Ignored (we always use PASV): */
- "passive-ftp\0" No_argument "\xff"
- "header\0" Required_argument "\xfe"
- "post-data\0" Required_argument "\xfd"
- /* Ignored (we don't do ssl) */
- "no-check-certificate\0" No_argument "\xfc"
- ;
-#endif
-
- INIT_G();
-
-#if ENABLE_FEATURE_WGET_LONG_OPTIONS
- applet_long_options = wget_longopts;
-#endif
- /* server.allocated = target.allocated = NULL; */
- opt_complementary = "-1" IF_FEATURE_WGET_TIMEOUT(":T+") IF_FEATURE_WGET_LONG_OPTIONS(":\xfe::");
- opt = getopt32(argv, "csqO:P:Y:U:T:" /*ignored:*/ "t:",
- &fname_out, &dir_prefix,
- &proxy_flag, &user_agent,
- IF_FEATURE_WGET_TIMEOUT(&G.timeout_seconds) IF_NOT_FEATURE_WGET_TIMEOUT(NULL),
- NULL /* -t RETRIES */
- IF_FEATURE_WGET_LONG_OPTIONS(, &headers_llist)
- IF_FEATURE_WGET_LONG_OPTIONS(, &post_data)
- );
-#if ENABLE_FEATURE_WGET_LONG_OPTIONS
- if (headers_llist) {
- int size = 1;
- char *cp;
- llist_t *ll = headers_llist;
- while (ll) {
- size += strlen(ll->data) + 2;
- ll = ll->link;
- }
- extra_headers = cp = xmalloc(size);
- while (headers_llist) {
- cp += sprintf(cp, "%s\r\n", (char*)llist_pop(&headers_llist));
- }
- }
-#endif
-
- /* TODO: compat issue: should handle "wget URL1 URL2..." */
+ char *proxy = NULL;
+ char *fname_out_alloc;
+ struct host_info server;
+ struct host_info target;
+ server.allocated = NULL;
+ target.allocated = NULL;
+ server.user = NULL;
target.user = NULL;
- parse_url(argv[optind], &target);
+
+ parse_url(url, &target);
/* Use the proxy if necessary */
- use_proxy = (strcmp(proxy_flag, "off") != 0);
+ use_proxy = (strcmp(G.proxy_flag, "off") != 0);
if (use_proxy) {
proxy = getenv(target.is_ftp ? "ftp_proxy" : "http_proxy");
if (proxy && proxy[0]) {
- server.user = NULL;
parse_url(proxy, &server);
} else {
use_proxy = 0;
@@ -676,7 +618,8 @@ int wget_main(int argc UNUSED_PARAM, char **argv)
if (!use_proxy) {
server.port = target.port;
if (ENABLE_FEATURE_IPV6) {
- server.host = xstrdup(target.host);
+ //free(server.allocated); - can't be non-NULL
+ server.host = server.allocated = xstrdup(target.host);
} else {
server.host = target.host;
}
@@ -685,34 +628,31 @@ int wget_main(int argc UNUSED_PARAM, char **argv)
if (ENABLE_FEATURE_IPV6)
strip_ipv6_scope_id(target.host);
- /* Guess an output filename, if there was no -O FILE */
- if (!(opt & WGET_OPT_OUTNAME)) {
- fname_out = bb_get_last_path_component_nostrip(target.path);
+ /* If there was no -O FILE, guess output filename */
+ output_fd = -1;
+ fname_out_alloc = NULL;
+ if (!G.fname_out) {
+ G.fname_out = bb_get_last_path_component_nostrip(target.path);
/* handle "wget http://kernel.org//" */
- if (fname_out[0] == '/' || !fname_out[0])
- fname_out = (char*)"index.html";
+ if (G.fname_out[0] == '/' || !G.fname_out[0])
+ G.fname_out = (char*)"index.html";
/* -P DIR is considered only if there was no -O FILE */
- if (dir_prefix)
- fname_out = concat_path_file(dir_prefix, fname_out);
+ if (G.dir_prefix)
+ G.fname_out = fname_out_alloc = concat_path_file(G.dir_prefix, G.fname_out);
} else {
- if (LONE_DASH(fname_out)) {
+ if (LONE_DASH(G.fname_out)) {
/* -O - */
output_fd = 1;
- opt &= ~WGET_OPT_CONTINUE;
+ option_mask32 &= ~WGET_OPT_CONTINUE;
}
}
#if ENABLE_FEATURE_WGET_STATUSBAR
- G.curfile = bb_get_last_path_component_nostrip(fname_out);
+ G.curfile = bb_get_last_path_component_nostrip(G.fname_out);
#endif
- /* Impossible?
- if ((opt & WGET_OPT_CONTINUE) && !fname_out)
- bb_error_msg_and_die("can't specify continue (-c) without a filename (-O)");
- */
-
/* Determine where to start transfer */
- if (opt & WGET_OPT_CONTINUE) {
- output_fd = open(fname_out, O_WRONLY);
+ if (option_mask32 & WGET_OPT_CONTINUE) {
+ output_fd = open(G.fname_out, O_WRONLY);
if (output_fd >= 0) {
G.beg_range = xlseek(output_fd, 0, SEEK_END);
}
@@ -723,12 +663,13 @@ int wget_main(int argc UNUSED_PARAM, char **argv)
redir_limit = 5;
resolve_lsa:
lsa = xhost2sockaddr(server.host, server.port);
- if (!(opt & WGET_OPT_QUIET)) {
+ if (!(option_mask32 & WGET_OPT_QUIET)) {
char *s = xmalloc_sockaddr2dotted(&lsa->u.sa);
fprintf(stderr, "Connecting to %s (%s)\n", server.host, s);
free(s);
}
establish_session:
+ G.chunked = G.got_clen = 0;
if (use_proxy || !target.is_ftp) {
/*
* HTTP session
@@ -736,6 +677,7 @@ int wget_main(int argc UNUSED_PARAM, char **argv)
char *str;
int status;
+
/* Open socket to http server */
sfp = open_socket(lsa);
@@ -745,14 +687,14 @@ int wget_main(int argc UNUSED_PARAM, char **argv)
target.is_ftp ? "f" : "ht", target.host,
target.path);
} else {
- if (opt & WGET_OPT_POST_DATA)
+ if (option_mask32 & WGET_OPT_POST_DATA)
fprintf(sfp, "POST /%s HTTP/1.1\r\n", target.path);
else
fprintf(sfp, "GET /%s HTTP/1.1\r\n", target.path);
}
fprintf(sfp, "Host: %s\r\nUser-Agent: %s\r\n",
- target.host, user_agent);
+ target.host, G.user_agent);
/* Ask server to close the connection as soon as we are done
* (IOW: we do not intend to send more requests)
@@ -774,11 +716,11 @@ int wget_main(int argc UNUSED_PARAM, char **argv)
fprintf(sfp, "Range: bytes=%"OFF_FMT"u-\r\n", G.beg_range);
#if ENABLE_FEATURE_WGET_LONG_OPTIONS
- if (extra_headers)
- fputs(extra_headers, sfp);
+ if (G.extra_headers)
+ fputs(G.extra_headers, sfp);
- if (opt & WGET_OPT_POST_DATA) {
- char *estr = URL_escape(post_data);
+ if (option_mask32 & WGET_OPT_POST_DATA) {
+ char *estr = URL_escape(G.post_data);
fprintf(sfp,
"Content-Type: application/x-www-form-urlencoded\r\n"
"Content-Length: %u\r\n"
@@ -810,7 +752,7 @@ int wget_main(int argc UNUSED_PARAM, char **argv)
switch (status) {
case 0:
case 100:
- while (gethdr(sfp /*, &n*/) != NULL)
+ while (gethdr(sfp) != NULL)
/* eat all remaining headers */;
goto read_response;
case 200:
@@ -856,9 +798,16 @@ However, in real world it was observed that some web servers
/*
* Retrieve HTTP headers.
*/
- while ((str = gethdr(sfp /*, &n*/)) != NULL) {
- /* gethdr converted "FOO:" string to lowercase */
+ while ((str = gethdr(sfp)) != NULL) {
+ static const char keywords[] ALIGN1 =
+ "content-length\0""transfer-encoding\0""location\0";
+ enum {
+ KEY_content_length = 1, KEY_transfer_encoding, KEY_location
+ };
smalluint key;
+
+ /* gethdr converted "FOO:" string to lowercase */
+
/* strip trailing whitespace */
char *s = strchrnul(str, '\0') - 1;
while (s >= str && (*s == ' ' || *s == '\t')) {
@@ -875,23 +824,22 @@ However, in real world it was observed that some web servers
continue;
}
if (key == KEY_transfer_encoding) {
- if (index_in_strings(keywords, str_tolower(str)) + 1 != KEY_chunked)
+ if (strcmp(str_tolower(str), "chunked") != 0)
bb_error_msg_and_die("transfer encoding '%s' is not supported", sanitize_string(str));
- G.chunked = G.got_clen = 1;
+ G.chunked = 1;
}
if (key == KEY_location && status >= 300) {
if (--redir_limit == 0)
bb_error_msg_and_die("too many redirections");
fclose(sfp);
- G.got_clen = 0;
- G.chunked = 0;
- if (str[0] == '/')
- /* free(target.allocated); */
- target.path = /* target.allocated = */ xstrdup(str+1);
+ if (str[0] == '/') {
+ free(target.allocated);
+ target.path = target.allocated = xstrdup(str+1);
/* lsa stays the same: it's on the same server */
- else {
+ } else {
parse_url(str, &target);
if (!use_proxy) {
+ free(server.allocated);
server.host = target.host;
/* strip_ipv6_scope_id(target.host); - no! */
/* we assume remote never gives us IPv6 addr with scope id */
@@ -916,30 +864,113 @@ However, in real world it was observed that some web servers
sfp = prepare_ftp_session(&dfp, &target, lsa);
}
- if (opt & WGET_OPT_SPIDER) {
- if (ENABLE_FEATURE_CLEAN_UP)
- fclose(sfp);
+ free(lsa);
+ free(server.allocated);
+ free(target.allocated);
+
+ if (option_mask32 & WGET_OPT_SPIDER) {
+ free(fname_out_alloc);
+ fclose(sfp);
return EXIT_SUCCESS;
}
if (output_fd < 0) {
int o_flags = O_WRONLY | O_CREAT | O_TRUNC | O_EXCL;
/* compat with wget: -O FILE can overwrite */
- if (opt & WGET_OPT_OUTNAME)
+ if (option_mask32 & WGET_OPT_OUTNAME)
o_flags = O_WRONLY | O_CREAT | O_TRUNC;
- output_fd = xopen(fname_out, o_flags);
+ output_fd = xopen(G.fname_out, o_flags);
}
+ free(fname_out_alloc);
+
retrieve_file_data(dfp, output_fd);
xclose(output_fd);
if (dfp != sfp) {
- /* It's ftp. Close it properly */
+ /* It's ftp. Close data connection properly */
fclose(dfp);
if (ftpcmd(NULL, NULL, sfp) != 226)
bb_error_msg_and_die("ftp error: %s", sanitize_string(G.wget_buf + 4));
/* ftpcmd("QUIT", NULL, sfp); - why bother? */
}
+ fclose(sfp);
return EXIT_SUCCESS;
}
+
+int wget_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int wget_main(int argc UNUSED_PARAM, char **argv)
+{
+#if ENABLE_FEATURE_WGET_LONG_OPTIONS
+ static const char wget_longopts[] ALIGN1 =
+ /* name, has_arg, val */
+ "continue\0" No_argument "c"
+//FIXME: -s isn't --spider, it's --save-headers!
+ "spider\0" No_argument "s"
+ "quiet\0" No_argument "q"
+ "output-document\0" Required_argument "O"
+ "directory-prefix\0" Required_argument "P"
+ "proxy\0" Required_argument "Y"
+ "user-agent\0" Required_argument "U"
+#if ENABLE_FEATURE_WGET_TIMEOUT
+ "timeout\0" Required_argument "T"
+#endif
+ /* Ignored: */
+ // "tries\0" Required_argument "t"
+ /* Ignored (we always use PASV): */
+ "passive-ftp\0" No_argument "\xff"
+ "header\0" Required_argument "\xfe"
+ "post-data\0" Required_argument "\xfd"
+ /* Ignored (we don't do ssl) */
+ "no-check-certificate\0" No_argument "\xfc"
+ ;
+#endif
+
+ int exitcode;
+#if ENABLE_FEATURE_WGET_LONG_OPTIONS
+ llist_t *headers_llist = NULL;
+#endif
+
+ INIT_G();
+
+ IF_FEATURE_WGET_TIMEOUT(G.timeout_seconds = 900;)
+ G.proxy_flag = "on"; /* use proxies if env vars are set */
+ G.user_agent = "Wget"; /* "User-Agent" header field */
+
+#if ENABLE_FEATURE_WGET_LONG_OPTIONS
+ applet_long_options = wget_longopts;
+#endif
+ opt_complementary = "-1" IF_FEATURE_WGET_TIMEOUT(":T+") IF_FEATURE_WGET_LONG_OPTIONS(":\xfe::");
+ getopt32(argv, "csqO:P:Y:U:T:" /*ignored:*/ "t:",
+ &G.fname_out, &G.dir_prefix,
+ &G.proxy_flag, &G.user_agent,
+ IF_FEATURE_WGET_TIMEOUT(&G.timeout_seconds) IF_NOT_FEATURE_WGET_TIMEOUT(NULL),
+ NULL /* -t RETRIES */
+ IF_FEATURE_WGET_LONG_OPTIONS(, &headers_llist)
+ IF_FEATURE_WGET_LONG_OPTIONS(, &G.post_data)
+ );
+ argv += optind;
+
+#if ENABLE_FEATURE_WGET_LONG_OPTIONS
+ if (headers_llist) {
+ int size = 1;
+ char *cp;
+ llist_t *ll = headers_llist;
+ while (ll) {
+ size += strlen(ll->data) + 2;
+ ll = ll->link;
+ }
+ G.extra_headers = cp = xmalloc(size);
+ while (headers_llist) {
+ cp += sprintf(cp, "%s\r\n", (char*)llist_pop(&headers_llist));
+ }
+ }
+#endif
+
+ exitcode = 0;
+ while (*argv)
+ exitcode |= download_one_url(*argv++);
+
+ return exitcode;
+}
generated by cgit v1.1 at 2024-12-27 11:53:48 +0000