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Commit | Line | Data |
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8efc0c15 | 1 | /* |
2 | ||
3 | ssh-add.c | |
4 | ||
5 | Author: Tatu Ylonen <ylo@cs.hut.fi> | |
6 | ||
7 | Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland | |
8 | All rights reserved | |
9 | ||
10 | Created: Thu Apr 6 00:52:24 1995 ylo | |
11 | ||
12 | Adds an identity to the authentication server, or removes an identity. | |
13 | ||
14 | */ | |
15 | ||
16 | #include "includes.h" | |
17 | RCSID("$Id$"); | |
18 | ||
19 | #include "rsa.h" | |
20 | #include "ssh.h" | |
21 | #include "xmalloc.h" | |
22 | #include "authfd.h" | |
23 | ||
24 | void | |
25 | delete_file(const char *filename) | |
26 | { | |
27 | RSA *key; | |
28 | char *comment; | |
29 | AuthenticationConnection *ac; | |
30 | ||
31 | key = RSA_new(); | |
32 | if (!load_public_key(filename, key, &comment)) | |
33 | { | |
34 | printf("Bad key file %s: %s\n", filename, strerror(errno)); | |
35 | return; | |
36 | } | |
37 | ||
38 | /* Send the request to the authentication agent. */ | |
39 | ac = ssh_get_authentication_connection(); | |
40 | if (!ac) | |
41 | { | |
42 | fprintf(stderr, | |
43 | "Could not open a connection to your authentication agent.\n"); | |
44 | RSA_free(key); | |
45 | xfree(comment); | |
46 | return; | |
47 | } | |
48 | if (ssh_remove_identity(ac, key)) | |
49 | fprintf(stderr, "Identity removed: %s (%s)\n", filename, comment); | |
50 | else | |
51 | fprintf(stderr, "Could not remove identity: %s\n", filename); | |
52 | RSA_free(key); | |
53 | xfree(comment); | |
54 | ssh_close_authentication_connection(ac); | |
55 | } | |
56 | ||
57 | void | |
58 | delete_all() | |
59 | { | |
60 | AuthenticationConnection *ac; | |
61 | ||
62 | /* Get a connection to the agent. */ | |
63 | ac = ssh_get_authentication_connection(); | |
64 | if (!ac) | |
65 | { | |
66 | fprintf(stderr, | |
67 | "Could not open a connection to your authentication agent.\n"); | |
68 | return; | |
69 | } | |
70 | ||
71 | /* Send a request to remove all identities. */ | |
72 | if (ssh_remove_all_identities(ac)) | |
73 | fprintf(stderr, "All identities removed.\n"); | |
74 | else | |
75 | fprintf(stderr, "Failed to remove all identitities.\n"); | |
76 | ||
77 | /* Close the connection to the agent. */ | |
78 | ssh_close_authentication_connection(ac); | |
79 | } | |
80 | ||
81 | void | |
82 | add_file(const char *filename) | |
83 | { | |
84 | RSA *key; | |
85 | RSA *public_key; | |
86 | AuthenticationConnection *ac; | |
87 | char *saved_comment, *comment, *pass; | |
88 | int first; | |
89 | ||
90 | key = RSA_new(); | |
91 | public_key = RSA_new(); | |
92 | if (!load_public_key(filename, public_key, &saved_comment)) | |
93 | { | |
94 | printf("Bad key file %s: %s\n", filename, strerror(errno)); | |
95 | return; | |
96 | } | |
97 | RSA_free(public_key); | |
98 | ||
99 | pass = xstrdup(""); | |
100 | first = 1; | |
101 | while (!load_private_key(filename, pass, key, &comment)) | |
102 | { | |
103 | /* Free the old passphrase. */ | |
104 | memset(pass, 0, strlen(pass)); | |
105 | xfree(pass); | |
106 | ||
107 | /* Ask for a passphrase. */ | |
108 | if (getenv("DISPLAY") && !isatty(fileno(stdin))) | |
109 | { | |
110 | xfree(saved_comment); | |
111 | return; | |
112 | } | |
113 | else | |
114 | { | |
115 | if (first) | |
116 | printf("Need passphrase for %s (%s).\n", filename, saved_comment); | |
117 | else | |
118 | printf("Bad passphrase.\n"); | |
119 | pass = read_passphrase("Enter passphrase: ", 1); | |
120 | if (strcmp(pass, "") == 0) | |
121 | { | |
122 | xfree(saved_comment); | |
123 | xfree(pass); | |
124 | return; | |
125 | } | |
126 | } | |
127 | first = 0; | |
128 | } | |
129 | memset(pass, 0, strlen(pass)); | |
130 | xfree(pass); | |
131 | ||
132 | xfree(saved_comment); | |
133 | ||
134 | /* Send the key to the authentication agent. */ | |
135 | ac = ssh_get_authentication_connection(); | |
136 | if (!ac) | |
137 | { | |
138 | fprintf(stderr, | |
139 | "Could not open a connection to your authentication agent.\n"); | |
140 | RSA_free(key); | |
141 | xfree(comment); | |
142 | return; | |
143 | } | |
144 | if (ssh_add_identity(ac, key, comment)) | |
145 | fprintf(stderr, "Identity added: %s (%s)\n", filename, comment); | |
146 | else | |
147 | fprintf(stderr, "Could not add identity: %s\n", filename); | |
148 | RSA_free(key); | |
149 | xfree(comment); | |
150 | ssh_close_authentication_connection(ac); | |
151 | } | |
152 | ||
153 | void | |
154 | list_identities() | |
155 | { | |
156 | AuthenticationConnection *ac; | |
157 | BIGNUM *e, *n; | |
158 | int bits, status; | |
159 | char *comment; | |
160 | int had_identities; | |
161 | ||
162 | ac = ssh_get_authentication_connection(); | |
163 | if (!ac) | |
164 | { | |
165 | fprintf(stderr, "Could not connect to authentication server.\n"); | |
166 | return; | |
167 | } | |
168 | e = BN_new(); | |
169 | n = BN_new(); | |
170 | had_identities = 0; | |
171 | for (status = ssh_get_first_identity(ac, &bits, e, n, &comment); | |
172 | status; | |
173 | status = ssh_get_next_identity(ac, &bits, e, n, &comment)) | |
174 | { | |
175 | char *buf; | |
176 | had_identities = 1; | |
177 | printf("%d ", bits); | |
178 | buf = BN_bn2dec(e); | |
179 | assert(buf != NULL); | |
180 | printf("%s ", buf); | |
181 | free (buf); | |
182 | buf = BN_bn2dec(n); | |
183 | assert(buf != NULL); | |
184 | printf("%s %s\n", buf, comment); | |
185 | free (buf); | |
186 | xfree(comment); | |
187 | } | |
188 | BN_clear_free(e); | |
189 | BN_clear_free(n); | |
190 | if (!had_identities) | |
191 | printf("The agent has no identities.\n"); | |
192 | ssh_close_authentication_connection(ac); | |
193 | } | |
194 | ||
195 | int | |
196 | main(int ac, char **av) | |
197 | { | |
198 | struct passwd *pw; | |
199 | char buf[1024]; | |
200 | int no_files = 1; | |
201 | int i; | |
202 | int deleting = 0; | |
203 | ||
204 | /* check if RSA support exists */ | |
205 | if (rsa_alive() == 0) { | |
206 | extern char *__progname; | |
207 | ||
208 | fprintf(stderr, | |
209 | "%s: no RSA support in libssl and libcrypto. See ssl(8).\n", | |
210 | __progname); | |
211 | exit(1); | |
212 | } | |
213 | ||
214 | for (i = 1; i < ac; i++) | |
215 | { | |
216 | if (strcmp(av[i], "-l") == 0) | |
217 | { | |
218 | list_identities(); | |
219 | no_files = 0; /* Don't default-add/delete if -l. */ | |
220 | continue; | |
221 | } | |
222 | if (strcmp(av[i], "-d") == 0) | |
223 | { | |
224 | deleting = 1; | |
225 | continue; | |
226 | } | |
227 | if (strcmp(av[i], "-D") == 0) | |
228 | { | |
229 | delete_all(); | |
230 | no_files = 0; | |
231 | continue; | |
232 | } | |
233 | no_files = 0; | |
234 | if (deleting) | |
235 | delete_file(av[i]); | |
236 | else | |
237 | add_file(av[i]); | |
238 | } | |
239 | if (no_files) | |
240 | { | |
241 | pw = getpwuid(getuid()); | |
242 | if (!pw) | |
243 | { | |
244 | fprintf(stderr, "No user found with uid %d\n", (int)getuid()); | |
245 | exit(1); | |
246 | } | |
247 | snprintf(buf, sizeof buf, "%s/%s", pw->pw_dir, SSH_CLIENT_IDENTITY); | |
248 | if (deleting) | |
249 | delete_file(buf); | |
250 | else | |
251 | add_file(buf); | |
252 | } | |
253 | exit(0); | |
254 | } |