1 /* pkg_parse.c - the opkg package management system
3 Copyright (C) 2009 Ubiq Technologies <graham.gower@gmail.com>
6 Copyright (C) 2002 Compaq Computer Corporation
8 This program is free software; you can redistribute it and/or
9 modify it under the terms of the GNU General Public License as
10 published by the Free Software Foundation; either version 2, or (at
11 your option) any later version.
13 This program is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
25 #include "opkg_utils.h"
26 #include "pkg_parse.h"
27 #include "libbb/libbb.h"
30 is_field(const char *type, const char *line)
32 if (!strncmp(line, type, strlen(type)))
38 parse_simple(const char *type, const char *line)
40 return trim_xstrdup(line + strlen(type) + 1);
44 * Parse a comma separated string into an array.
47 parse_comma_separated(const char *raw, unsigned int *count)
49 char **depends = NULL;
50 const char *start, *end;
53 /* skip past the "Field:" marker */
54 while (*raw && *raw != ':')
58 if (line_is_blank(raw)) {
64 depends = xrealloc(depends, sizeof(char *) * (line_count + 1));
70 while (*raw != ',' && *raw)
74 while (end > start && isspace(*end))
77 depends[line_count] = xstrndup(start, end-start);
89 parse_status(pkg_t *pkg, const char *sstr)
91 char sw_str[64], sf_str[64], ss_str[64];
93 if (sscanf(sstr, "Status: %63s %63s %63s",
94 sw_str, sf_str, ss_str) != 3) {
95 opkg_msg(ERROR, "Failed to parse Status line for %s\n",
100 pkg->state_want = pkg_state_want_from_str(sw_str);
101 pkg->state_flag = pkg_state_flag_from_str(sf_str);
102 pkg->state_status = pkg_state_status_from_str(ss_str);
106 parse_conffiles(pkg_t *pkg, const char *cstr)
108 char file_name[1024], md5sum[35];
110 if (sscanf(cstr, "%1023s %34s", file_name, md5sum) != 2) {
111 opkg_msg(ERROR, "Failed to parse Conffiles line for %s\n",
116 conffile_list_append(&pkg->conffiles, file_name, md5sum);
120 parse_version(pkg_t *pkg, const char *vstr)
124 if (strncmp(vstr, "Version:", 8) == 0)
127 while (*vstr && isspace(*vstr))
130 colon = strchr(vstr, ':');
133 pkg->epoch = strtoul(vstr, NULL, 10);
135 opkg_perror(ERROR, "%s: invalid epoch", pkg->name);
142 pkg->version= xstrdup(vstr);
143 pkg->revision = strrchr(pkg->version,'-');
146 *pkg->revision++ = '\0';
152 get_arch_priority(const char *arch)
154 nv_pair_list_elt_t *l;
156 list_for_each_entry(l , &conf->arch_list.head, node) {
157 nv_pair_t *nv = (nv_pair_t *)l->data;
158 if (strcmp(nv->name, arch) == 0)
159 return strtol(nv->value, NULL, 0);
165 pkg_parse_line(pkg_t *pkg, const char *line, uint mask)
167 /* these flags are a bit hackish... */
168 static int reading_conffiles = 0, reading_description = 0;
171 /* Exclude globally masked fields. */
174 /* Flip the semantics of the mask. */
179 if ((mask & PFM_ARCHITECTURE ) && is_field("Architecture", line)) {
180 pkg->architecture = parse_simple("Architecture", line);
181 pkg->arch_priority = get_arch_priority(pkg->architecture);
182 } else if ((mask & PFM_AUTO_INSTALLED) && is_field("Auto-Installed", line)) {
183 char *tmp = parse_simple("Auto-Installed", line);
184 if (strcmp(tmp, "yes") == 0)
185 pkg->auto_installed = 1;
191 if ((mask & PFM_CONFFILES) && is_field("Conffiles", line)) {
192 reading_conffiles = 1;
193 reading_description = 0;
194 goto dont_reset_flags;
196 else if ((mask & PFM_CONFLICTS) && is_field("Conflicts", line))
197 pkg->conflicts_str = parse_comma_separated(line, &pkg->conflicts_count);
201 if ((mask & PFM_DESCRIPTION) && is_field("Description", line)) {
202 pkg->description = parse_simple("Description", line);
203 reading_conffiles = 0;
204 reading_description = 1;
205 goto dont_reset_flags;
206 } else if ((mask & PFM_DEPENDS) && is_field("Depends", line))
207 pkg->depends_str = parse_comma_separated(line, &pkg->depends_count);
211 if((mask & PFM_ESSENTIAL) && is_field("Essential", line)) {
212 char *tmp = parse_simple("Essential", line);
213 if (strcmp(tmp, "yes") == 0)
220 if((mask & PFM_FILENAME) && is_field("Filename", line))
221 pkg->filename = parse_simple("Filename", line);
225 if ((mask && PFM_INSTALLED_SIZE) && is_field("Installed-Size", line)) {
226 char *tmp = parse_simple("Installed-Size", line);
227 pkg->installed_size = strtoul(tmp, NULL, 0);
229 } else if ((mask && PFM_INSTALLED_TIME) && is_field("Installed-Time", line)) {
230 char *tmp = parse_simple("Installed-Time", line);
231 pkg->installed_time = strtoul(tmp, NULL, 0);
237 if (mask && PFM_MD5SUM) {
238 if (is_field("MD5sum:", line))
239 pkg->md5sum = parse_simple("MD5sum", line);
240 /* The old opkg wrote out status files with the wrong
241 * case for MD5sum, let's parse it either way */
242 else if (is_field("MD5Sum:", line))
243 pkg->md5sum = parse_simple("MD5Sum", line);
244 } else if((mask & PFM_MAINTAINER) && is_field("Maintainer", line))
245 pkg->maintainer = parse_simple("Maintainer", line);
249 if ((mask & PFM_PACKAGE) && is_field("Package", line))
250 pkg->name = parse_simple("Package", line);
251 else if ((mask & PFM_PRIORITY) && is_field("Priority", line))
252 pkg->priority = parse_simple("Priority", line);
253 else if ((mask & PFM_PROVIDES) && is_field("Provides", line))
254 pkg->provides_str = parse_comma_separated(line, &pkg->provides_count);
255 else if ((mask & PFM_PRE_DEPENDS) && is_field("Pre-Depends", line))
256 pkg->pre_depends_str = parse_comma_separated(line, &pkg->pre_depends_count);
260 if ((mask & PFM_RECOMMENDS) && is_field("Recommends", line))
261 pkg->recommends_str = parse_comma_separated(line, &pkg->recommends_count);
262 else if ((mask & PFM_REPLACES) && is_field("Replaces", line))
263 pkg->replaces_str = parse_comma_separated(line, &pkg->replaces_count);
268 if ((mask & PFM_SECTION) && is_field("Section", line))
269 pkg->section = parse_simple("Section", line);
271 else if ((mask & PFM_SHA256SUM) && is_field("SHA256sum", line))
272 pkg->sha256sum = parse_simple("SHA256sum", line);
274 else if ((mask & PFM_SIZE) && is_field("Size", line)) {
275 char *tmp = parse_simple("Size", line);
276 pkg->size = strtoul(tmp, NULL, 0);
278 } else if ((mask & PFM_SOURCE) && is_field("Source", line))
279 pkg->source = parse_simple("Source", line);
280 else if ((mask & PFM_STATUS) && is_field("Status", line))
281 parse_status(pkg, line);
282 else if ((mask & PFM_SUGGESTS) && is_field("Suggests", line))
283 pkg->suggests_str = parse_comma_separated(line, &pkg->suggests_count);
287 if ((mask & PFM_TAGS) && is_field("Tags", line))
288 pkg->tags = parse_simple("Tags", line);
292 if ((mask & PFM_VERSION) && is_field("Version", line))
293 parse_version(pkg, line);
297 if ((mask & PFM_DESCRIPTION) && reading_description) {
298 pkg->description = xrealloc(pkg->description,
299 strlen(pkg->description)
300 + 1 + strlen(line) + 1);
301 strcat(pkg->description, "\n");
302 strcat(pkg->description, (line));
303 goto dont_reset_flags;
304 } else if ((mask && PFM_CONFFILES) && reading_conffiles) {
305 parse_conffiles(pkg, line);
306 goto dont_reset_flags;
311 /* For package lists, signifies end of package. */
312 if(line_is_blank(line)) {
318 reading_description = 0;
319 reading_conffiles = 0;
327 pkg_parse_from_stream_nomalloc(pkg_t *pkg, FILE *fp, uint mask,
328 char **buf0, size_t buf0len)
342 if (fgets(buf, (int)buflen, fp) == NULL) {
344 opkg_perror(ERROR, "fgets");
346 } else if (strlen(*buf0) == buf0len-1) {
347 opkg_msg(ERROR, "Missing new line character"
348 " at end of file!\n");
349 pkg_parse_line(pkg, *buf0, mask);
354 nl = strchr(buf, '\n');
356 if (strlen(buf) < buflen-1) {
358 * Line could be exactly buflen-1 long and
359 * missing a newline, but we won't know until
360 * fgets fails to read more data.
362 opkg_msg(ERROR, "Missing new line character"
363 " at end of file!\n");
364 pkg_parse_line(pkg, *buf0, mask);
367 if (buf0len >= EXCESSIVE_LINE_LEN) {
368 opkg_msg(ERROR, "Excessively long line at "
369 "%d. Corrupt file?\n",
376 * Realloc and point buf past the data already read,
377 * at the NULL terminator inserted by fgets.
378 * |<--------------- buf0len ----------------->|
379 * | |<------- buflen ---->|
380 * |---------------------|---------------------|
385 *buf0 = xrealloc(*buf0, buf0len);
386 buf = *buf0 + buflen -2;
395 if (pkg_parse_line(pkg, *buf0, mask))
403 if (pkg->name == NULL) {
404 /* probably just a blank line */
412 pkg_parse_from_stream(pkg_t *pkg, FILE *fp, uint mask)
416 const size_t len = 4096;
419 ret = pkg_parse_from_stream_nomalloc(pkg, fp, mask, &buf, len);