2 * Copyright notice from original mutt:
3 * Copyright (C) 1998-2000 Werner Koch <werner.koch@guug.de>
4 * Copyright (C) 1999-2000 Thomas Roessler <roessler@does-not-exist.org>
6 * This file is part of mutt-ng, see http://www.muttng.org/.
7 * It's licensed under the GNU General Public License,
8 * please see the file GPL in the top level source directory.
14 * This code used to be the parser for GnuPG's output.
16 * Nowadays, we are using an external pubring lister with PGP which mimics
17 * gpg's output format.
29 #include <sys/types.h>
36 #include <lib-lib/mem.h>
37 #include <lib-lib/str.h>
38 #include <lib-lib/date.h>
40 #include <lib-mime/mime.h>
48 * Read the GNUPG keys. For now we read the complete keyring by
49 * calling gnupg in a special mode.
51 * The output format of gpgm is colon delimited with these fields:
52 * - record type ("pub","uid","sig","rev" etc.)
56 * - 16 hex digits with the long keyid.
57 * - timestamp (1998-02-28)
64 /* decode the backslash-escaped user ids. */
66 static char *_chs = 0;
68 static void fix_uid (char *uid)
73 for (s = d = uid; *s;) {
74 if (*s == '\\' && *(s + 1) == 'x' && isxdigit ((unsigned char) *(s + 2))
75 && isxdigit ((unsigned char) *(s + 3))) {
76 *d++ = hexval (*(s + 2)) << 4 | hexval (*(s + 3));
84 if (_chs && (cd = mutt_iconv_open (_chs, "utf-8", 0)) != MUTT_ICONV_ERROR) {
85 int n = s - uid + 1; /* chars available in original buffer */
91 buf = p_new(char, n + 1);
92 ib = uid, ibl = d - uid + 1, ob = buf, obl = n;
93 my_iconv(cd, &ib, &ibl, &ob, &obl);
96 memcpy (uid, buf, ob - buf);
99 else if (ob - buf == n && (buf[n] = 0, m_strlen(buf) < n))
100 memcpy (uid, buf, n);
107 static pgp_key_t parse_pub_line (char *buf, int *is_subkey, pgp_key_t k)
109 pgp_uid_t *uid = NULL;
110 int field = 0, is_uid = 0;
119 for (p = buf; p; p = pend) {
120 if ((pend = strchr (p, ':')))
123 if (field > 1 && !*p)
127 case 1: /* record type */
129 if (!m_strcmp(p, "pub"));
130 else if (!m_strcmp(p, "sub"))
132 else if (!m_strcmp(p, "sec"));
133 else if (!m_strcmp(p, "ssb"))
135 else if (!m_strcmp(p, "uid"))
140 if (!(is_uid || (*is_subkey && option (OPTPGPIGNORESUB))))
141 k = pgp_new_keyinfo();
145 case 2: /* trust info */
147 switch (*p) { /* look only at the first letter */
149 flags |= KEYFLAG_EXPIRED;
152 flags |= KEYFLAG_REVOKED;
155 flags |= KEYFLAG_DISABLED;
171 if (!is_uid && !(*is_subkey && option (OPTPGPIGNORESUB)))
176 case 3: /* key length */
178 if (!(*is_subkey && option (OPTPGPIGNORESUB)))
179 k->keylen = atoi (p); /* fixme: add validation checks */
182 case 4: /* pubkey algo */
184 if (!(*is_subkey && option (OPTPGPIGNORESUB))) {
185 k->numalg = atoi (p);
186 k->algorithm = pgp_pkalgbytype (atoi (p));
190 case 5: /* 16 hex digits with the long keyid. */
192 if (!(*is_subkey && option (OPTPGPIGNORESUB)))
193 m_strreplace(&k->keyid, p);
197 case 6: /* timestamp (1998-02-28) */
206 st_time.tm_hour = 12;
207 m_strcpy(tstr, sizeof(tstr), p);
209 st_time.tm_year = atoi (tstr) - 1900;
211 st_time.tm_mon = (atoi (tstr + 5)) - 1;
212 st_time.tm_mday = atoi (tstr + 8);
213 k->gen_time = mutt_mktime (&st_time, 0);
216 case 7: /* valid for n days */
218 case 8: /* Local id */
220 case 9: /* ownertrust */
225 break; /* empty field or no trailing colon */
227 /* ignore user IDs on subkeys */
228 if (!is_uid && (*is_subkey && option (OPTPGPIGNORESUB)))
231 uid = p_new(pgp_uid_t, 1);
233 uid->addr = m_strdup(p);
237 uid->next = k->address;
240 if (strstr (p, "ENCR"))
241 k->flags |= KEYFLAG_PREFER_ENCRYPTION;
242 if (strstr (p, "SIGN"))
243 k->flags |= KEYFLAG_PREFER_SIGNING;
247 case 11: /* signature class */
249 case 12: /* key capabilities */
253 flags |= KEYFLAG_DISABLED;
257 flags |= KEYFLAG_CANENCRYPT;
261 flags |= KEYFLAG_CANSIGN;
266 if (!is_uid && (!*is_subkey || !option (OPTPGPIGNORESUB)
267 || !((flags & KEYFLAG_DISABLED)
268 || (flags & KEYFLAG_REVOKED)
269 || (flags & KEYFLAG_EXPIRED))))
281 pgp_key_t pgp_get_candidates (pgp_ring_t keyring, string_list_t * hints)
285 char buf[LONG_STRING];
286 pgp_key_t db = NULL, *kend, k = NULL, kk, mainkey = NULL;
290 if ((devnull = open ("/dev/null", O_RDWR)) == -1)
293 m_strreplace(&_chs, Charset);
295 thepid = pgp_invoke_list_keys (NULL, &fp, NULL, -1, -1, devnull,
304 while (fgets (buf, sizeof (buf) - 1, fp)) {
305 if (!(kk = parse_pub_line (buf, &is_sub, k)))
308 /* Only append kk to the list if it's new. */
317 k->flags |= KEYFLAG_SUBKEY;
319 for (l = &k->address; *l; l = &(*l)->next);
320 *l = pgp_copy_uids (mainkey->address, k);
328 mutt_perror ("fgets");
331 mutt_wait_filter (thepid);