Line | Source | Count |
1 | | - |
2 | | - |
3 | | - |
4 | | - |
5 | | - |
6 | | - |
7 | | - |
8 | | - |
9 | | - |
10 | | - |
11 | | - |
12 | | - |
13 | | - |
14 | | - |
15 | | - |
16 | | - |
17 | | - |
18 | | - |
19 | | - |
20 | | - |
21 | | - |
22 | | - |
23 | | - |
24 | | - |
25 | | - |
26 | #include "includes.h" | - |
27 | | - |
28 | #include <sys/types.h> | - |
29 | #include <sys/wait.h> | - |
30 | | - |
31 | #include <errno.h> | - |
32 | #include <fcntl.h> | - |
33 | #ifdef HAVE_PATHS_H | - |
34 | # include <paths.h> | - |
35 | #endif | - |
36 | #include <signal.h> | - |
37 | #include <stdarg.h> | - |
38 | #include <stdio.h> | - |
39 | #include <stdlib.h> | - |
40 | #include <string.h> | - |
41 | #include <unistd.h> | - |
42 | | - |
43 | #include "xmalloc.h" | - |
44 | #include "misc.h" | - |
45 | #include "pathnames.h" | - |
46 | #include "log.h" | - |
47 | #include "ssh.h" | - |
48 | #include "uidswap.h" | - |
49 | | - |
50 | static char * | - |
51 | ssh_askpass(char *askpass, const char *msg) | - |
52 | { | - |
53 | pid_t pid, ret; | - |
54 | size_t len; | - |
55 | char *pass; | - |
56 | int p[2], status; | - |
57 | char buf[1024]; | - |
58 | void (*osigchld)(int); | - |
59 | | - |
60 | if (fflush(stdout) != 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
61 | error("ssh_askpass: fflush: %s", strerror(errno)); never executed: error("ssh_askpass: fflush: %s", strerror( (*__errno_location ()) )); | 0 |
62 | if (askpass == NULL)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
63 | fatal("internal error: askpass undefined"); never executed: fatal("internal error: askpass undefined"); | 0 |
64 | if (pipe(p) < 0) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
65 | error("ssh_askpass: pipe: %s", strerror(errno)); | - |
66 | return NULL; never executed: return ((void *)0) ; | 0 |
67 | } | - |
68 | osigchld = signal(SIGCHLD, SIG_DFL); | - |
69 | if ((pid = fork()) < 0) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
70 | error("ssh_askpass: fork: %s", strerror(errno)); | - |
71 | signal(SIGCHLD, osigchld); | - |
72 | return NULL; never executed: return ((void *)0) ; | 0 |
73 | } | - |
74 | if (pid == 0) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
75 | close(p[0]); | - |
76 | if (dup2(p[1], STDOUT_FILENO) < 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
77 | fatal("ssh_askpass: dup2: %s", strerror(errno)); never executed: fatal("ssh_askpass: dup2: %s", strerror( (*__errno_location ()) )); | 0 |
78 | execlp(askpass, askpass, msg, (char *)NULL); | - |
79 | fatal("ssh_askpass: exec(%s): %s", askpass, strerror(errno)); | - |
80 | } never executed: end of block | 0 |
81 | close(p[1]); | - |
82 | | - |
83 | len = 0; | - |
84 | do { | - |
85 | ssize_t r = read(p[0], buf + len, sizeof(buf) - 1 - len); | - |
86 | | - |
87 | if (r == -1 && errno == EINTR)TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
88 | continue; never executed: continue; | 0 |
89 | if (r <= 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
90 | break; never executed: break; | 0 |
91 | len += r; | - |
92 | } while (sizeof(buf) - 1 - len > 0); never executed: end of block TRUE | never evaluated | FALSE | never evaluated |
| 0 |
93 | buf[len] = '\0'; | - |
94 | | - |
95 | close(p[0]); | - |
96 | while ((ret = waitpid(pid, &status, 0)) < 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
97 | if (errno != EINTR)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
98 | break; never executed: break; | 0 |
99 | signal(SIGCHLD, osigchld); | - |
100 | if (ret == -1 || !WIFEXITED(status) || WEXITSTATUS(status) != 0) {TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
101 | explicit_bzero(buf, sizeof(buf)); | - |
102 | return NULL; never executed: return ((void *)0) ; | 0 |
103 | } | - |
104 | | - |
105 | buf[strcspn(buf, "\r\n")] = '\0'; | - |
106 | pass = xstrdup(buf); | - |
107 | explicit_bzero(buf, sizeof(buf)); | - |
108 | return pass; never executed: return pass; | 0 |
109 | } | - |
110 | | - |
111 | | - |
112 | | - |
113 | | - |
114 | | - |
115 | | - |
116 | | - |
117 | char * | - |
118 | read_passphrase(const char *prompt, int flags) | - |
119 | { | - |
120 | char *askpass = NULL, *ret, buf[1024]; | - |
121 | int rppflags, use_askpass = 0, ttyfd; | - |
122 | | - |
123 | rppflags = (flags & RP_ECHO) ? RPP_ECHO_ON : RPP_ECHO_OFF;TRUE | never evaluated | FALSE | never evaluated |
| 0 |
124 | if (flags & RP_USE_ASKPASS)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
125 | use_askpass = 1; never executed: use_askpass = 1; | 0 |
126 | else if (flags & RP_ALLOW_STDIN) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
127 | if (!isatty(STDIN_FILENO)) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
128 | debug("read_passphrase: stdin is not a tty"); | - |
129 | use_askpass = 1; | - |
130 | } never executed: end of block | 0 |
131 | } else { never executed: end of block | 0 |
132 | rppflags |= RPP_REQUIRE_TTY; | - |
133 | ttyfd = open(_PATH_TTY, O_RDWR); | - |
134 | if (ttyfd >= 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
135 | close(ttyfd); never executed: close(ttyfd); | 0 |
136 | else { | - |
137 | debug("read_passphrase: can't open %s: %s", _PATH_TTY, | - |
138 | strerror(errno)); | - |
139 | use_askpass = 1; | - |
140 | } never executed: end of block | 0 |
141 | } | - |
142 | | - |
143 | if ((flags & RP_USE_ASKPASS) && getenv("DISPLAY") == NULL)TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
144 | return (flags & RP_ALLOW_EOF) ? NULL : xstrdup(""); never executed: return (flags & 0x0004) ? ((void *)0) : xstrdup(""); TRUE | never evaluated | FALSE | never evaluated |
| 0 |
145 | | - |
146 | if (use_askpass && getenv("DISPLAY")) {TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
147 | if (getenv(SSH_ASKPASS_ENV))TRUE | never evaluated | FALSE | never evaluated |
| 0 |
148 | askpass = getenv(SSH_ASKPASS_ENV); never executed: askpass = getenv("SSH_ASKPASS"); | 0 |
149 | else | - |
150 | askpass = _PATH_SSH_ASKPASS_DEFAULT; never executed: askpass = "/var/tmp/openssh-test/libexec/ssh-askpass"; | 0 |
151 | if ((ret = ssh_askpass(askpass, prompt)) == NULL)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
152 | if (!(flags & RP_ALLOW_EOF))TRUE | never evaluated | FALSE | never evaluated |
| 0 |
153 | return xstrdup(""); never executed: return xstrdup(""); | 0 |
154 | return ret; never executed: return ret; | 0 |
155 | } | - |
156 | | - |
157 | if (readpassphrase(prompt, buf, sizeof buf, rppflags) == NULL) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
158 | if (flags & RP_ALLOW_EOF)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
159 | return NULL; never executed: return ((void *)0) ; | 0 |
160 | return xstrdup(""); never executed: return xstrdup(""); | 0 |
161 | } | - |
162 | | - |
163 | ret = xstrdup(buf); | - |
164 | explicit_bzero(buf, sizeof(buf)); | - |
165 | return ret; never executed: return ret; | 0 |
166 | } | - |
167 | | - |
168 | int | - |
169 | ask_permission(const char *fmt, ...) | - |
170 | { | - |
171 | va_list args; | - |
172 | char *p, prompt[1024]; | - |
173 | int allowed = 0; | - |
174 | | - |
175 | va_start(args, fmt); | - |
176 | vsnprintf(prompt, sizeof(prompt), fmt, args); | - |
177 | va_end(args); | - |
178 | | - |
179 | p = read_passphrase(prompt, RP_USE_ASKPASS|RP_ALLOW_EOF); | - |
180 | if (p != NULL) {TRUE | never evaluated | FALSE | never evaluated |
| 0 |
181 | | - |
182 | | - |
183 | | - |
184 | | - |
185 | if (*p == '\0' || *p == '\n' ||TRUE | never evaluated | FALSE | never evaluated |
TRUE | never evaluated | FALSE | never evaluated |
| 0 |
186 | strcasecmp(p, "yes") == 0)TRUE | never evaluated | FALSE | never evaluated |
| 0 |
187 | allowed = 1; never executed: allowed = 1; | 0 |
188 | free(p); | - |
189 | } never executed: end of block | 0 |
190 | | - |
191 | return (allowed); never executed: return (allowed); | 0 |
192 | } | - |
| | |