1 /*
2 ** Copyright 2001-2003 Double Precision, Inc. See COPYING for
3 ** distribution information.
4 */
5
6
7 #include "config.h"
8 #include <stdio.h>
9 #include <stdlib.h>
10 #include <string.h>
11 #include <unistd.h>
12 #include <courier-unicode.h>
13 #include <sys/types.h>
14 #include <sys/stat.h>
15 #include <sys/time.h>
16 #include <sys/wait.h>
17 #if HAVE_FCNTL_H
18 #include <fcntl.h>
19 #endif
20 #include "gpg.h"
21 #include "gpglib.h"
22
23 #include "numlib/numlib.h"
24
25 extern int libmail_gpg_stdin, libmail_gpg_stdout, libmail_gpg_stderr;
26 extern pid_t libmail_gpg_pid;
27
28
29 /*
30 ** Sign a key.
31 */
32
33 static int dosignkey(int (*)(const char *, size_t, void *),
34 const char *cmdstr,
35 void *);
36
libmail_gpg_signkey(const char * gpgdir,const char * signthis,const char * signwith,int passphrase_fd,int (* dump_func)(const char *,size_t,void *),void * voidarg)37 int libmail_gpg_signkey(const char *gpgdir, const char *signthis, const char *signwith,
38 int passphrase_fd,
39 int (*dump_func)(const char *, size_t, void *),
40 void *voidarg)
41 {
42 char *argvec[14];
43 int rc;
44 char passphrase_fd_buf[NUMBUFSIZE];
45 int i;
46
47 argvec[0]="gpg";
48 argvec[1]="--command-fd";
49 argvec[2]="0";
50 argvec[3]="--default-key";
51 argvec[4]=(char *)signwith;
52 argvec[5]="-q";
53 argvec[6]="--no-tty";
54
55 i=7;
56 if (passphrase_fd >= 0 && fcntl(passphrase_fd, F_SETFD, 0) >= 0)
57 {
58 GPGARGV_PASSPHRASE_FD(argvec, i, passphrase_fd,
59 passphrase_fd_buf);
60 #if GPG_REQUIRES_PINENTRY_MODE_OPTION
61 argvec[i++]="--pinentry-mode";
62 argvec[i++]="loopback";
63 #endif
64 }
65
66 argvec[i++]="--sign-key";
67 argvec[i++]=(char *)signthis;
68 argvec[i]=0;
69
70 if (libmail_gpg_fork(&libmail_gpg_stdin, &libmail_gpg_stdout, NULL, gpgdir, argvec) < 0)
71 rc= -1;
72 else
73 {
74 int rc2;
75
76 char cmdstr[10];
77
78 strcpy(cmdstr, "Y\n");
79
80 rc=dosignkey(dump_func, cmdstr, voidarg);
81 rc2=libmail_gpg_cleanup();
82 if (rc2)
83 rc=rc2;
84 }
85 return (rc);
86 }
87
dosignkey(int (* dump_func)(const char *,size_t,void *),const char * cmdstr,void * voidarg)88 static int dosignkey(int (*dump_func)(const char *, size_t, void *),
89 const char *cmdstr,
90 void *voidarg)
91 {
92 int rc=libmail_gpg_write( cmdstr, strlen(cmdstr),
93 dump_func, NULL, NULL, 0, voidarg);
94 int rc2;
95
96 if (rc == 0)
97 rc=libmail_gpg_read(dump_func, NULL, NULL, 0, voidarg);
98 rc2=libmail_gpg_cleanup();
99 if (rc == 0)
100 rc=rc2;
101 return (rc);
102 }
103
libmail_gpg_makepassphrasepipe(const char * passphrase,size_t passphrase_size)104 int libmail_gpg_makepassphrasepipe(const char *passphrase,
105 size_t passphrase_size)
106 {
107 int pfd[2];
108 pid_t p;
109
110 if (pipe(pfd) < 0)
111 return -1;
112
113 p=fork();
114
115 if (p < 0)
116 {
117 close(pfd[0]);
118 close(pfd[1]);
119 return -1;
120 }
121
122 if (p == 0)
123 {
124 p=fork();
125
126 if (p)
127 _exit(0);
128
129 close(pfd[0]);
130
131 while (passphrase_size)
132 {
133 ssize_t n=write(pfd[1], passphrase, passphrase_size);
134
135 if (n < 0)
136 break;
137 passphrase += n;
138 passphrase_size -= n;
139 }
140 _exit(0);
141 }
142 waitpid(p, NULL, 0);
143 close(pfd[1]);
144 return(pfd[0]);
145 }
146