Annotation of embedaddon/sudo/src/conversation.c, revision 1.1.1.2
1.1 misho 1: /*
2: * Copyright (c) 1999-2005, 2007-2010 Todd C. Miller <Todd.Miller@courtesan.com>
3: *
4: * Permission to use, copy, modify, and distribute this software for any
5: * purpose with or without fee is hereby granted, provided that the above
6: * copyright notice and this permission notice appear in all copies.
7: *
8: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15: *
16: * Sponsored in part by the Defense Advanced Research Projects
17: * Agency (DARPA) and Air Force Research Laboratory, Air Force
18: * Materiel Command, USAF, under agreement number F39502-99-1-0512.
19: */
20:
21: #include <config.h>
22:
23: #include <sys/types.h>
24: #include <sys/param.h>
25: #include <stdio.h>
26: #ifdef STDC_HEADERS
27: # include <stdlib.h>
28: # include <stddef.h>
29: #else
30: # ifdef HAVE_STDLIB_H
31: # include <stdlib.h>
32: # endif
33: #endif /* STDC_HEADERS */
34: #ifdef HAVE_STRING_H
35: # if defined(HAVE_MEMORY_H) && !defined(STDC_HEADERS)
36: # include <memory.h>
37: # endif
38: # include <string.h>
39: #endif /* HAVE_STRING_H */
40: #ifdef HAVE_STRINGS_H
41: # include <strings.h>
42: #endif /* HAVE_STRINGS_H */
43: #ifdef HAVE_UNISTD_H
44: # include <unistd.h>
45: #endif /* HAVE_UNISTD_H */
46: #include <errno.h>
47:
48: #include "sudo.h"
49: #include "sudo_plugin.h"
1.1.1.2 ! misho 50: #include "sudo_plugin_int.h"
1.1 misho 51:
52: extern int tgetpass_flags; /* XXX */
53:
1.1.1.2 ! misho 54: #if defined(HAVE_DLOPEN) || defined(HAVE_SHL_LOAD)
! 55: sudo_conv_t sudo_conv; /* NULL in sudo front-end */
! 56: #endif
! 57:
1.1 misho 58: /*
59: * Sudo conversation function.
60: */
61: int
62: sudo_conversation(int num_msgs, const struct sudo_conv_message msgs[],
63: struct sudo_conv_reply replies[])
64: {
65: struct sudo_conv_reply *repl;
66: const struct sudo_conv_message *msg;
67: char *pass;
68: int n, flags = tgetpass_flags;
69:
70: for (n = 0; n < num_msgs; n++) {
71: msg = &msgs[n];
72: repl = &replies[n];
73: switch (msg->msg_type & 0xff) {
74: case SUDO_CONV_PROMPT_ECHO_ON:
75: case SUDO_CONV_PROMPT_MASK:
76: if (msg->msg_type == SUDO_CONV_PROMPT_ECHO_ON)
77: SET(flags, TGP_ECHO);
78: else
79: SET(flags, TGP_MASK);
80: /* FALLTHROUGH */
81: case SUDO_CONV_PROMPT_ECHO_OFF:
82: if (ISSET(msg->msg_type, SUDO_CONV_PROMPT_ECHO_OK))
83: SET(flags, TGP_NOECHO_TRY);
84: /* Read the password unless interrupted. */
85: pass = tgetpass(msg->msg, msg->timeout, flags);
86: if (pass == NULL)
87: goto err;
88: repl->reply = estrdup(pass);
89: zero_bytes(pass, strlen(pass));
90: break;
91: case SUDO_CONV_INFO_MSG:
92: if (msg->msg)
93: (void) fputs(msg->msg, stdout);
94: break;
95: case SUDO_CONV_ERROR_MSG:
96: if (msg->msg)
97: (void) fputs(msg->msg, stderr);
98: break;
1.1.1.2 ! misho 99: case SUDO_CONV_DEBUG_MSG:
! 100: if (msg->msg)
! 101: sudo_debug_write(msg->msg, strlen(msg->msg), 0);
! 102: break;
1.1 misho 103: default:
104: goto err;
105: }
106: }
107:
108: return 0;
109:
110: err:
111: /* Zero and free allocated memory and return an error. */
112: do {
113: repl = &replies[n];
114: if (repl->reply != NULL) {
115: zero_bytes(repl->reply, strlen(repl->reply));
116: free(repl->reply);
117: repl->reply = NULL;
118: }
119: } while (n--);
120:
121: return -1;
122: }
123:
124: int
125: _sudo_printf(int msg_type, const char *fmt, ...)
126: {
127: va_list ap;
128: FILE *fp;
129: int len;
130:
131: switch (msg_type) {
132: case SUDO_CONV_INFO_MSG:
133: fp = stdout;
134: break;
135: case SUDO_CONV_ERROR_MSG:
136: fp = stderr;
137: break;
138: default:
139: errno = EINVAL;
140: return -1;
141: }
142:
143: va_start(ap, fmt);
144: len = vfprintf(fp, fmt, ap);
145: va_end(ap);
146:
147: return len;
148: }
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