/[winpt]/trunk/Src/wptKeyserver.cpp
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revision 197 by twoaday, Mon Apr 10 07:38:06 2006 UTC revision 211 by twoaday, Sun May 7 12:36:48 2006 UTC
# Line 1  Line 1 
1  /* wptKeyserver.cpp - W32 Keyserver Access  /* wptKeyserver.cpp - W32 Keyserver Access
2   *      Copyright (C) 2000-2005 Timo Schulz   *      Copyright (C) 2000-2006 Timo Schulz
3   *      Copyright (C) 2001 Marco Cunha   *      Copyright (C) 2001 Marco Cunha
4   *   *
5   * This file is part of WinPT.   * This file is part of WinPT.
# Line 37  Line 37 
37  #include "wptGPG.h"  #include "wptGPG.h"
38  #include "wptRegistry.h"  #include "wptRegistry.h"
39    
40  /* just map net_errno to a winsock error. */  /* Map net_errno to a winsock error. */
41  #define net_errno ((int)WSAGetLastError ())  #define net_errno ((int)WSAGetLastError ())
42    
43    
# Line 240  sock_read (int fd, char *buf, int buflen Line 240  sock_read (int fd, char *buf, int buflen
240      return 0;      return 0;
241  }  }
242    
243    
244    /* Helper to create a string from the gpgme data and
245       then release the gpgme data object. */
246    char*
247    data_release_and_get_mem (gpgme_data_t in, int *r_bufferlen)
248    {
249        size_t n;
250        char *buffer, *p;
251    
252        gpg_data_putc (in, '\0');
253        p = gpgme_data_release_and_get_mem (in, &n);
254        buffer = m_strdup (p);
255        if (r_bufferlen)
256            *r_bufferlen = (int)n;
257        gpgme_free (p);
258        return buffer;
259    }
260    
261    
262  /* Read much data as possible from the socket @fd and  /* Read much data as possible from the socket @fd and
263     return the data in @buffer. Caller must free data.     return the data in @buffer. Caller must free data.
264     Return value: 0 on success. */     Return value: 0 on success. */
# Line 247  int Line 266  int
266  sock_read_ext (int fd, char **buffer, int *r_bufferlen)  sock_read_ext (int fd, char **buffer, int *r_bufferlen)
267  {  {
268      gpgme_data_t dh;      gpgme_data_t dh;
269      char buf[1024], *p;      char buf[1024];
270      size_t n=0;      size_t n=0;
271      int nread, rc;      int nread, rc;
272    
273      gpgme_data_new (&dh);      if (gpgme_data_new (&dh))
274            BUG (0);
275      while (n < 10) {      while (n < 10) {
276          rc = sock_select (fd, 1);          rc = sock_select (fd, 1);
277          if (rc == SOCKET_ERROR) {          if (rc == SOCKET_ERROR) {
# Line 269  sock_read_ext (int fd, char **buffer, in Line 289  sock_read_ext (int fd, char **buffer, in
289              gpgme_data_write (dh, buf, nread);              gpgme_data_write (dh, buf, nread);
290          }          }
291      }      }
292      gpg_data_putc (dh, '\0');  
293      p = gpgme_data_release_and_get_mem (dh, &n);      *buffer = data_release_and_get_mem (dh, r_bufferlen);
     *buffer = m_strdup (p);  
     if (r_bufferlen)  
         *r_bufferlen = n;  
     gpgme_free (p);  
294      return 0;      return 0;
295  }  }
296    
# Line 337  wsock_end (void) Line 353  wsock_end (void)
353  /* Return a string representation of a winsock error. */  /* Return a string representation of a winsock error. */
354  const char*  const char*
355  wsock_strerror (void)  wsock_strerror (void)
356  {      {
     static char buf[384];  
357      int ec = WSAGetLastError ();      int ec = WSAGetLastError ();
358            
359        if (!ec)
360            return "";
361      switch (ec) {      switch (ec) {
362      case WSAENETDOWN:      case WSAENETDOWN:
363          return _("The network subsystem has failed");          return _("Network unreachable");
364    
365        case WSAEHOSTUNREACH:
366            return _("Host unreachable");
367    
368      case WSAHOST_NOT_FOUND:      case WSAHOST_NOT_FOUND:
369          return _("Authoritative Answer Host not found");          return _("Could not resolve host name");
370    
371        case WSAECONNREFUSED:
372            return _("Connection refused");
373    
374      case WSAETIMEDOUT:      case WSAETIMEDOUT:
375          return _("The connection has been dropped because of a network failure");      case WSAECONNABORTED:
376            return _("Connection timeout");
377    
378        case WSAENETRESET:
379        case WSAECONNRESET:    
380            return _("Connection resetted by peer");
381    
382        case WSAESHUTDOWN:
383            return _("Socket has been shutdown");
384    
385      default:      default:
386          _snprintf (buf, sizeof (buf) -1, _("Unknown Winsock error ec=%d"),ec);          break;
         return buf;  
387      }      }
388      return NULL;  
389        return "";
390  }  }
391    
392    
# Line 495  keyserver_set_default (const char *hostn Line 529  keyserver_set_default (const char *hostn
529      if (hostname != NULL) {      if (hostname != NULL) {
530          free_if_alloc (default_keyserver);          free_if_alloc (default_keyserver);
531          default_keyserver = m_strdup (hostname);          default_keyserver = m_strdup (hostname);
         if (!default_keyserver)  
             BUG (0);  
532          default_keyserver_port = port;          default_keyserver_port = port;
533      }      }
534      if (!port)      if (!port)
# Line 590  kserver_load_conf (const char *conf) Line 622  kserver_load_conf (const char *conf)
622      /* check if the host has a http:// prefix and skip it */      /* check if the host has a http:// prefix and skip it */
623      if (proxy.host && !strncmp (proxy.host, "http://", 7)) {      if (proxy.host && !strncmp (proxy.host, "http://", 7)) {
624          char *host = m_strdup (proxy.host+7);          char *host = m_strdup (proxy.host+7);
         if (!host)  
             BUG (0);  
625          free_if_alloc (proxy.host);          free_if_alloc (proxy.host);
626          proxy.host = host;          proxy.host = host;
627      }      }
# Line 737  static char* Line 767  static char*
767  URL_encode (const char *url, size_t ulen, size_t *ret_nlen)  URL_encode (const char *url, size_t ulen, size_t *ret_nlen)
768  {  {
769      gpgme_data_t hd;      gpgme_data_t hd;
770      char numbuf[5], *pp, *p;      char numbuf[5], *p;
771      size_t i, n;      size_t i;
772        int nlen;
773    
774      gpgme_data_new (&hd);      if (gpgme_data_new (&hd))
775            BUG (0);
776      for (i=0; i < ulen; i++) {      for (i=0; i < ulen; i++) {
777          if (isalnum (url[i]) || url[i] == '-')          if (isalnum (url[i]) || url[i] == '-')
778              gpg_data_putc (hd, url[i]);              gpg_data_putc (hd, url[i]);
# Line 751  URL_encode (const char *url, size_t ulen Line 783  URL_encode (const char *url, size_t ulen
783              gpgme_data_write (hd, numbuf, strlen (numbuf));              gpgme_data_write (hd, numbuf, strlen (numbuf));
784          }          }
785      }      }
     gpg_data_putc (hd, '\0');  
786    
787      /* Copy memory to avoid that we need to use gpgme_free later. */      p = data_release_and_get_mem (hd, &nlen);
     pp = gpgme_data_release_and_get_mem (hd, &n);  
     p = m_strdup (pp);  
     gpgme_free (pp);  
788      if (ret_nlen)      if (ret_nlen)
789          *ret_nlen = n;          *ret_nlen = nlen;
790      return p;      return p;
791  }  }
792    
# Line 825  kserver_send_request (const char *hostna Line 853  kserver_send_request (const char *hostna
853  }  }
854    
855    
856    /* Interface for receiving a public key. */
857  int  int
858  kserver_recvkey_ext (const char *hostname, WORD port, const char *keyid,  kserver_recvkey (const char *hostname, WORD port, const char *keyid,
859                       char **r_key, int *r_keylen)                   char **r_key, int *r_keylen)
860  {  {
861      char *request = NULL;      char *request = NULL;
862      int conn_fd;      int conn_fd;
863      int rc, n;      int rc;
864    
865      if (!port)      if (!port)
866          port = HKP_PORT;          port = HKP_PORT;
# Line 868  kserver_recvkey_ext (const char *hostnam Line 897  kserver_recvkey_ext (const char *hostnam
897          goto leave;          goto leave;
898      }      }
899            
900      rc = sock_read_ext (conn_fd, r_key, &n);      rc = sock_read_ext (conn_fd, r_key, r_keylen);
901      if (rc == SOCKET_ERROR) {      if (rc == SOCKET_ERROR) {
902          rc = WPTERR_WINSOCK_RECVKEY;          rc = WPTERR_WINSOCK_RECVKEY;
903          goto leave;          goto leave;
904      }      }
905    
     if (r_keylen)  
         *r_keylen = n;  
906      log_debug ("%s\r\n", *r_key);      log_debug ("%s\r\n", *r_key);
907      rc = check_hkp_response (*r_key, 1);      rc = check_hkp_response (*r_key, 1);
908      if (rc)      if (rc)
# Line 889  leave: Line 916  leave:
916      return rc;      return rc;
917  }  }
918    
 /* Interface for receiving a public key. */  
 int  
 kserver_recvkey (const char *hostname, WORD port, const char *keyid,  
                  char *key, int maxkeylen)  
 {  
     char *tmpkey;  
     int rc, nread=0;  
   
     /* XXX: just a wrapper around the new method, replace it  
             soon as possible. */  
     rc = kserver_recvkey_ext (hostname, port, keyid, &tmpkey, &nread);  
     if (rc)  
         return rc;  
   
     if (nread > maxkeylen) {  
         free_if_alloc (tmpkey);  
         return WPTERR_GENERAL;  
     }  
     strcpy (key, tmpkey);  
     free_if_alloc (tmpkey);  
     return 0;  
 }  
   
919    
920  /* Interface to send a public key. */  /* Interface to send a public key. */
921  int  int
# Line 1194  spawn_application (char *cmdl) Line 1198  spawn_application (char *cmdl)
1198  }  }
1199    
1200    
1201  /* Receive an key via LDAP from host @host with the keyid @keyid.  static FILE*
1202     @key contains the key on success. */  do_spawn_ldap_helper (const char *host, const char *keyid)
1203  int  {
1204  ldap_recvkey (const char *host, const char *keyid, char *key, int maxkeylen)      FILE *fp = NULL;
1205  {          char *p, *sep;
1206      FILE *fp;      char *ksprg;
1207      const char *s;      char outf[256], inf[256];
1208      char *ksprg = NULL, *p = NULL, *sep;      size_t n;
     char inf[256], outf[256], buf[512];  
     DWORD n;  
     int start_key = 0, failed = 0;  
     int rc = 0;  
1209    
1210      p = get_gnupg_prog ();      p = get_gnupg_prog ();
1211      n = strlen (p) + 1 + 128;      n = strlen (p) + 1 + 128;
# Line 1221  ldap_recvkey (const char *host, const ch Line 1221  ldap_recvkey (const char *host, const ch
1221      if (file_exist_check (ksprg)) {      if (file_exist_check (ksprg)) {
1222          log_box ("LDAP Keyserver Plugin", MB_ERR,          log_box ("LDAP Keyserver Plugin", MB_ERR,
1223                   "%s: could not find LDAP keyserver module!", ksprg);                   "%s: could not find LDAP keyserver module!", ksprg);
1224          rc = -1;          fp = NULL;
1225          goto leave;          goto leave;
1226      }      }
1227      get_temp_name (outf, sizeof (outf)-1, keyid);      get_temp_name (outf, sizeof (outf)-1, keyid);
# Line 1230  ldap_recvkey (const char *host, const ch Line 1230  ldap_recvkey (const char *host, const ch
1230      if (!fp) {      if (!fp) {
1231          log_box ("LDAP Keyserver Plugin", MB_ERR, "%s: %s", inf,          log_box ("LDAP Keyserver Plugin", MB_ERR, "%s: %s", inf,
1232                   winpt_strerror (WPTERR_FILE_OPEN));                   winpt_strerror (WPTERR_FILE_OPEN));
         rc = -1;  
1233          goto leave;          goto leave;
1234      }      }
1235      fprintf (fp,      fprintf (fp,
# Line 1249  ldap_recvkey (const char *host, const ch Line 1248  ldap_recvkey (const char *host, const ch
1248          BUG (NULL);          BUG (NULL);
1249      sprintf (p, "%s -o %s %s", ksprg, outf, inf);      sprintf (p, "%s -o %s %s", ksprg, outf, inf);
1250      if (spawn_application (p)) {      if (spawn_application (p)) {
1251          rc = -1;          fp = NULL;
1252          goto leave;          goto leave;
1253      }      }
   
1254      fp = fopen (outf, "rb");      fp = fopen (outf, "rb");
1255      if (!fp) {      if (!fp)
1256          log_box ("LDAP Keyserver Plugin", MB_ERR, "%s: %s", outf,          log_box ("LDAP Keyserver Plugin", MB_ERR, "%s: %s", outf,
1257                   winpt_strerror (WPTERR_FILE_OPEN));                   winpt_strerror (WPTERR_FILE_OPEN));
1258          rc = -1;  
1259          goto leave;  leave:
1260      }      DeleteFile (inf);
1261      memset (key, 0, maxkeylen);      DeleteFile (outf);
1262        free_if_alloc (p);
1263        free_if_alloc (ksprg);
1264        return fp;
1265    }
1266    
1267    /* Receive an key via LDAP from host @host with the keyid @keyid.
1268       @key contains the key on success. */
1269    int
1270    ldap_recvkey (const char *host, const char *keyid,
1271                  char **r_key, int *r_keylen)
1272    {  
1273        gpgme_data_t raw;
1274        FILE *fp;
1275        const char *s;
1276        char buf[512];
1277        int start_key = 0, failed = 0;
1278        int rc = 0;
1279    
1280        fp = do_spawn_ldap_helper (host, keyid);
1281        if (!fp)
1282            return WPTERR_GENERAL;
1283    
1284        if (gpgme_data_new (&raw))
1285            BUG (0);
1286      while (!feof (fp)) {      while (!feof (fp)) {
1287          s = fgets (buf, sizeof (buf)-1, fp);          s = fgets (buf, sizeof (buf)-1, fp);
1288          if (!s)          if (!s)
# Line 1272  ldap_recvkey (const char *host, const ch Line 1294  ldap_recvkey (const char *host, const ch
1294          if (!start_key && strstr (s, "KEY") && strstr (s, "BEGIN")) {          if (!start_key && strstr (s, "KEY") && strstr (s, "BEGIN")) {
1295              start_key = 1;              start_key = 1;
1296              continue;              continue;
1297          }                }
1298          if (!start_key)          if (!start_key)
1299              continue;              continue;
1300          strcat (key, buf);          gpgme_data_write (raw, buf, strlen (buf));
1301          maxkeylen -= strlen (buf);          if (strstr (s, "KEY") && strstr (s, "END"))
         if (maxkeylen < 0 || (strstr (s, "KEY") && strstr (s, "END")))  
1302              break;              break;
1303      }      }
1304      fclose (fp);      fclose (fp);
1305    
1306  leave:      if (failed)
     if (failed || !strlen (key))  
1307          rc = WPTERR_WINSOCK_RECVKEY;          rc = WPTERR_WINSOCK_RECVKEY;
1308      DeleteFile (inf);      *r_key = data_release_and_get_mem (raw, r_keylen);
     DeleteFile (outf);  
     free_if_alloc (p);  
     free_if_alloc (ksprg);  
1309      return rc;      return rc;
1310  }  }
1311    
# Line 1296  leave: Line 1313  leave:
1313  /* Receive an key via FINGER from host @host with the user @user.  /* Receive an key via FINGER from host @host with the user @user.
1314     On success @key contains the key. */     On success @key contains the key. */
1315  int  int
1316  finger_recvkey (const char *host, const char *user, char *key, int maxkeylen)  finger_recvkey (const char *host, const char *user,
1317                    char **r_key, int *r_keylen)
1318  {  {
1319      char buf[128];      gpgme_data_t raw;
1320        char buf[256];
1321      int fd, nread;      int fd, nread;
1322      int start_key = 0;      int start_key = 0;
1323      int rc=0;      int rc=0;
# Line 1310  finger_recvkey (const char *host, const Line 1329  finger_recvkey (const char *host, const
1329      sock_write (fd, user, strlen (user));      sock_write (fd, user, strlen (user));
1330      sock_write (fd, "\r\n", 2);      sock_write (fd, "\r\n", 2);
1331    
1332      memset (key, 0, maxkeylen);      if (gpgme_data_new (&raw))
1333      while (maxkeylen > 0) {          BUG (0);
1334    
1335        for (;;) {
1336          if (sock_getline (fd, buf, sizeof (buf), &nread))          if (sock_getline (fd, buf, sizeof (buf), &nread))
1337              break;              break;
1338          strcat (buf, "\n");          strcat (buf, "\n");
1339          if (strstr (buf, "BEGIN PGP PUBLIC KEY BLOCK")) {          if (strstr (buf, "BEGIN PGP PUBLIC KEY BLOCK")) {
1340              strcat (key, buf);              gpgme_data_write (raw, buf, nread);
1341              start_key = 1;              start_key = 1;
             maxkeylen -= nread;  
1342          }          }
1343          else if (strstr (buf, "END PGP PUBLIC KEY BLOCK" ) && start_key) {          else if (strstr (buf, "END PGP PUBLIC KEY BLOCK" ) && start_key) {
1344              strcat (key, buf);              gpgme_data_write (raw, buf, nread);
1345              start_key--;              start_key--;
             maxkeylen -= nread;  
1346              break;              break;
1347          }          }
1348          else if (start_key) {          else if (start_key)
1349              strcat (key, buf);              gpgme_data_write (raw, buf, nread);
             maxkeylen -= nread;  
         }  
1350      }      }
1351    
1352      closesocket (fd);      closesocket (fd);
1353      if (start_key != 0)      if (start_key != 0)
1354          rc = WPTERR_WINSOCK_RECVKEY;          rc = WPTERR_WINSOCK_RECVKEY;
1355        *r_key = data_release_and_get_mem (raw, r_keylen);
1356      return rc;      return rc;
1357  }  }
1358    
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