Oops commited binary instead of source.
authorWerner Koch <wk@gnupg.org>
Mon, 11 Oct 2004 12:45:50 +0000 (12:45 +0000)
committerWerner Koch <wk@gnupg.org>
Mon, 11 Oct 2004 12:45:50 +0000 (12:45 +0000)
keyserver/gpgkeys_finger [deleted file]
keyserver/gpgkeys_finger.c [new file with mode: 0644]

diff --git a/keyserver/gpgkeys_finger b/keyserver/gpgkeys_finger
deleted file mode 100755 (executable)
index 2e46a1e..0000000
Binary files a/keyserver/gpgkeys_finger and /dev/null differ
diff --git a/keyserver/gpgkeys_finger.c b/keyserver/gpgkeys_finger.c
new file mode 100644 (file)
index 0000000..967fa81
--- /dev/null
@@ -0,0 +1,550 @@
+/* gpgkeys_finger.c - fetch a key via finger
+ * Copyright (C) 2004 Free Software Foundation, Inc.
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
+ */
+
+#include <config.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <unistd.h>
+#ifdef HAVE_GETOPT_H
+#include <getopt.h>
+#endif
+
+#ifdef _WIN32
+#include <windows.h>
+#else
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/time.h>
+#include <time.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+#include <netdb.h>
+#endif
+
+#define INCLUDED_BY_MAIN_MODULE 1
+#include "util.h"
+#include "keyserver.h"
+
+#ifdef _WIN32
+#define sock_close(a)  closesocket(a)
+#else
+#define sock_close(a)  close(a)
+#endif
+
+
+extern char *optarg;
+extern int optind;
+
+#define GET    0
+#define MAX_LINE 80
+
+static int verbose=0;
+static char path[1024];
+static FILE *input, *output, *console;
+
+#define BEGIN "-----BEGIN PGP PUBLIC KEY BLOCK-----"
+#define END   "-----END PGP PUBLIC KEY BLOCK-----"
+
+
+#ifdef _WIN32
+static void
+deinit_sockets (void)
+{
+  WSACleanup();
+}
+
+static void
+init_sockets (void)
+{
+  static int initialized;
+  static WSADATA wsdata;
+
+  if (initialized)
+    return;
+
+  if (WSAStartup (0x0101, &wsdata) )
+    {
+      fprintf (console, "error initializing socket library: ec=%d\n", 
+               (int)WSAGetLastError () );
+      return;
+    }
+  if (wsdata.wVersion < 0x0001)
+    {
+      fprintf (console, "socket library version is %x.%x - but 1.1 needed\n",
+               LOBYTE(wsdata.wVersion), HIBYTE(wsdata.wVersion));
+      WSACleanup();
+      return;
+    }
+  atexit  (deinit_sockets);
+  initialized = 1;
+}
+#endif /*_WIN32*/
+
+
+/* Connect to SERVER at PORT and return a file descriptor or -1 on
+   error. */
+static int
+connect_server (const char *server, unsigned short port)
+{
+  int sock = -1;
+
+#ifdef _WIN32
+  struct hostent *hp;
+  struct sockaddr_in addr;
+  unsigned long l;
+
+  init_sockets ();
+
+  memset (&addr, 0, sizeof addr);
+  addr.sin_family = AF_INET;
+  addr.sin_port = htons (port);
+
+  /* Win32 gethostbyname doesn't handle IP addresses internally, so we
+     try inet_addr first on that platform only. */
+  if ((l = inet_addr (server)) != SOCKET_ERROR) 
+    memcpy (&ad.sin_addr, &l, sizeof l);
+  else if ((hp = gethostbyname (server))) 
+    {
+      if (hp->h_addrtype != AF_INET)
+        {
+          fprintf (console, "gpgkeys: unknown address family for `%s'\n",
+                   server);
+          return -1;
+        }
+      if (hp->h_length != 4)
+        {
+          fprintf (console, "gpgkeys: illegal address length for`%s'\n",
+                   server);
+          return -1;
+        }
+      memcpy (&addr.sin_addr, hp->h_addr, hp->h_length);
+    }
+  else
+    {
+      fprintf (console, "gpgkeys: host `%s' not found: ec=%d\n",
+               server, (int)WSAGetLastError ());
+      return -1;
+    }
+
+  sock = socket (AF_INET, SOCK_STREAM, 0);
+  if (sock == INVALID_SOCKET)
+    {
+      fprintf (console, "gpgkeys: error creating socket: ec=%d\n", 
+               (int)WSAGetLastError ());
+      return -1;
+    }
+
+  if (connect (sock, (struct sockaddr *)&addr, sizeof addr))
+    {
+      fprintf (console, "gpgkeys: error connecting `%s': ec=%d\n", 
+               server, (int)WSAGetLastError ());
+      sock_close (sock);
+      return -1;
+    }
+
+#else
+
+  struct sockaddr_in addr;
+  struct hostent *host;
+
+  addr.sin_family = AF_INET;
+  addr.sin_port = htons (port);
+  host = gethostbyname ((char*)server);
+  if (!host)
+    {
+      fprintf (console, "gpgkeys: host `%s' not found: %s\n",
+               server, strerror (errno));
+      return -1;
+    }
+  
+  addr.sin_addr = *(struct in_addr*)host->h_addr;
+
+  sock = socket (AF_INET, SOCK_STREAM, 0);
+  if (sock == -1)
+    {
+      fprintf (console, "gpgkeys: error creating socket: %s\n", 
+               strerror (errno));
+      return -1;
+    }
+  
+  if (connect (sock, (struct sockaddr *)&addr, sizeof addr) == -1)
+    {
+      fprintf (console, "gpgkeys: error connecting `%s': %s\n", 
+               server, strerror (errno));
+      close (sock);
+      return -1;
+    }
+#endif
+    
+  return sock;
+}
+
+static int
+write_server (int sock, const char *data, size_t length)
+{
+  int nleft;
+
+  nleft = length;
+  while (nleft > 0) 
+    {
+      int nwritten;
+      
+#ifdef _WIN32  
+      nwritten = send (sock, data, nleft, 0);
+      if ( nwritten == SOCKET_ERROR )
+        {
+          fprintf (console, "gpgkeys: write failed: ec=%d\n",
+                   (int)WSAGetLastError ());
+          return -1;
+        }
+#else
+      nwritten = write (sock, data, nleft);
+      if (nwritten == -1)
+        {
+          if (errno == EINTR)
+            continue;
+          if (errno == EAGAIN)
+            {
+              struct timeval tv;
+              
+              tv.tv_sec =  0;
+              tv.tv_usec = 50000;
+              select(0, NULL, NULL, NULL, &tv);
+              continue;
+           }
+          fprintf (console, "gpgkeys: write failed: %s\n", strerror(errno));
+          return -1;
+       }
+#endif
+      nleft -=nwritten;
+      data += nwritten;
+    }
+  
+  return 0;
+}
+
+
+/* Send the finger REQUEST to the server.  Returns 0 and a file descriptor
+   in R_SOCK if the request was sucessful. */
+static int
+send_request (const char *request, int *r_sock)
+{
+  char *server;
+  char *name;
+  int sock;
+
+  *r_sock = -1;
+  name = strdup (request);
+  if (!name)
+    {
+      fprintf(console,"gpgkeys: out of memory\n");
+      return KEYSERVER_NO_MEMORY;
+    }
+
+  server = strchr (name, '@');
+  if (!server)
+    {
+      fprintf (console, "gpgkeys: no name included in request\n");
+      free (name);
+      return KEYSERVER_GENERAL_ERROR;
+    }
+  *server++ = 0;
+  
+  sock = connect_server (server, 79);
+  if (sock == -1)
+    {
+      free (name);
+      return KEYSERVER_UNREACHABLE;
+    }
+
+  if (write_server (sock, name, strlen (name))
+      || write_server (sock, "\r\n", 2))
+    {
+      free (name);
+      sock_close (sock);
+      return KEYSERVER_GENERAL_ERROR;
+    }
+  free (name);
+  *r_sock = sock;
+  return 0;
+}
+
+
+
+static int
+get_key (char *getkey)
+{
+  int rc;
+  int sock;
+  IOBUF fp_read;
+  unsigned int maxlen, buflen, gotit=0;
+  unsigned char *line = NULL;
+
+  if (strncmp (getkey,"0x",2)==0)
+    getkey+=2;
+
+  /* Frankly we don't know what keys the server will return; we
+     indicated the requested key anyway. */
+  fprintf(output,"KEY 0x%s BEGIN\n",getkey);
+
+  rc = send_request (path, &sock);
+  if(rc)
+    {
+      fprintf(output,"KEY 0x%s FAILED %d\n",getkey, rc);
+      sock_close (sock);
+      return KEYSERVER_OK;
+    }
+  
+  /* Hmmm, we use iobuf here only to cope with Windows socket
+     peculiarities (we can't used fdopen).  */
+  fp_read = iobuf_sockopen (sock , "r");
+  if (!fp_read)
+    {
+      fprintf(output,"KEY 0x%s FAILED %d\n",getkey, KEYSERVER_INTERNAL_ERROR);
+      sock_close (sock);
+      return KEYSERVER_OK;
+    }
+
+  while ( iobuf_read_line ( fp_read, &line, &buflen, &maxlen))
+    {
+      maxlen=1024;
+      
+      if(gotit)
+        {
+          fputs (line, output);
+          if (!strncmp(line,END,strlen(END)))
+            break;
+        }
+      else if(!strncmp(line,BEGIN,strlen(BEGIN)))
+        {
+          fputs (line,output);
+          gotit=1;
+        }
+    }
+  
+  if(gotit)
+    fprintf (output,"KEY 0x%s END\n", getkey);
+  else
+    {
+      fprintf (console,"gpgkeys: key %s not found on keyserver\n",getkey);
+      fprintf (output,"KEY 0x%s FAILED %d\n",
+               getkey,KEYSERVER_KEY_NOT_FOUND);
+    }
+
+  m_free(line);
+  iobuf_close (fp_read);
+
+  return KEYSERVER_OK;
+}
+
+
+int
+main(int argc,char *argv[])
+{
+  int arg,action=-1,ret=KEYSERVER_INTERNAL_ERROR;
+  char line[MAX_LINE];
+  char *thekey=NULL;
+
+  console=stderr;
+
+  while((arg=getopt(argc,argv,"hVo:"))!=-1)
+    switch(arg)
+      {
+      default:
+      case 'h':
+       fprintf(console,"-h\thelp\n");
+       fprintf(console,"-V\tversion\n");
+       fprintf(console,"-o\toutput to this file\n");
+       return KEYSERVER_OK;
+
+      case 'V':
+       fprintf(stdout,"%d\n%s\n",KEYSERVER_PROTO_VERSION,VERSION);
+       return KEYSERVER_OK;
+
+      case 'o':
+       output=fopen(optarg,"w");
+       if(output==NULL)
+         {
+           fprintf(console,"gpgkeys: Cannot open output file \"%s\": %s\n",
+                   optarg,strerror(errno));
+           return KEYSERVER_INTERNAL_ERROR;
+         }
+
+       break;
+      }
+
+  if(argc>optind)
+    {
+      input=fopen(argv[optind],"r");
+      if(input==NULL)
+       {
+         fprintf(console,"gpgkeys: Cannot open input file \"%s\": %s\n",
+                 argv[optind],strerror(errno));
+         return KEYSERVER_INTERNAL_ERROR;
+       }
+    }
+
+  if(input==NULL)
+    input=stdin;
+
+  if(output==NULL)
+    output=stdout;
+
+  /* Get the command and info block */
+
+  while(fgets(line,MAX_LINE,input)!=NULL)
+    {
+      int version;
+      char commandstr[7];
+      char optionstr[256];
+      char hash;
+
+      if(line[0]=='\n')
+       break;
+
+      if(sscanf(line,"%c",&hash)==1 && hash=='#')
+       continue;
+
+      if(sscanf(line,"COMMAND %6s\n",commandstr)==1)
+       {
+         commandstr[6]='\0';
+
+         if(strcasecmp(commandstr,"get")==0)
+           action=GET;
+
+         continue;
+       }
+
+      if(sscanf(line,"OPAQUE %1023s\n",path)==1)
+       {
+         path[1023]='\0';
+         continue;
+       }
+
+      if(sscanf(line,"VERSION %d\n",&version)==1)
+       {
+         if(version!=KEYSERVER_PROTO_VERSION)
+           {
+             ret=KEYSERVER_VERSION_ERROR;
+             goto fail;
+           }
+
+         continue;
+       }
+
+      if(sscanf(line,"OPTION %255s\n",optionstr)==1)
+       {
+         int no=0;
+         char *start=&optionstr[0];
+
+         optionstr[255]='\0';
+
+         if(strncasecmp(optionstr,"no-",3)==0)
+           {
+             no=1;
+             start=&optionstr[3];
+           }
+
+         if(strcasecmp(start,"verbose")==0)
+           {
+             if(no)
+               verbose--;
+             else
+               verbose++;
+           }
+
+         continue;
+       }
+    }
+
+  /* If it's a GET or a SEARCH, the next thing to come in is the
+     keyids.  If it's a SEND, then there are no keyids. */
+
+  if(action==GET)
+    {
+      /* Eat the rest of the file */
+      for(;;)
+       {
+         if(fgets(line,MAX_LINE,input)==NULL)
+           break;
+         else
+           {
+             if(line[0]=='\n' || line[0]=='\0')
+               break;
+
+             if(!thekey)
+               {
+                 thekey=strdup(line);
+                 if(!thekey)
+                   {
+                     fprintf(console,"gpgkeys: out of memory while "
+                             "building key list\n");
+                     ret=KEYSERVER_NO_MEMORY;
+                     goto fail;
+                   }
+
+                 /* Trim the trailing \n */
+                 thekey[strlen(line)-1]='\0';
+               }
+           }
+       }
+    }
+  else
+    {
+      fprintf(console,
+             "gpgkeys: this keyserver type only supports key retrieval\n");
+      goto fail;
+    }
+
+  if(!thekey || !*path)
+    {
+      fprintf(console,"gpgkeys: invalid keyserver instructions\n");
+      goto fail;
+    }
+
+  /* Send the response */
+
+  fprintf(output,"VERSION %d\n",KEYSERVER_PROTO_VERSION);
+  fprintf(output,"PROGRAM %s\n\n",VERSION);
+
+  if (verbose>1)
+    {
+      if(path[0])
+       fprintf(console,"Path:\t\t%s\n",path);
+      fprintf(console,"Command:\tGET\n");
+    }
+
+  ret = get_key(thekey);
+
+ fail:
+
+  free(thekey);
+
+  if(input!=stdin)
+    fclose(input);
+
+  if(output!=stdout)
+    fclose(output);
+
+  return ret;
+}