… | |
… | |
22 | *---------------------------------------------------------------------*/ |
22 | *---------------------------------------------------------------------*/ |
23 | |
23 | |
24 | #include "../config.h" /* NECESSARY */ |
24 | #include "../config.h" /* NECESSARY */ |
25 | #include "rxvt.h" |
25 | #include "rxvt.h" |
26 | |
26 | |
27 | # include <cstdlib> |
27 | #include <cstdlib> |
28 | # include <cstring> |
28 | #include <cstring> |
29 | |
29 | |
30 | #ifdef HAVE_SYS_TYPES_H |
|
|
31 | # include <sys/types.h> |
30 | #include <sys/types.h> |
32 | #endif |
31 | #include <sys/socket.h> |
33 | #ifdef HAVE_UNISTD_H |
|
|
34 | # include <unistd.h> |
32 | #include <unistd.h> |
35 | #endif |
|
|
36 | #ifdef HAVE_FCNTL_H |
|
|
37 | # include <fcntl.h> |
33 | #include <fcntl.h> |
38 | #endif |
34 | |
39 | #ifdef HAVE_SYS_IOCTL_H |
35 | #ifdef HAVE_SYS_IOCTL_H |
40 | # include <sys/ioctl.h> |
36 | # include <sys/ioctl.h> |
41 | #endif |
37 | #endif |
42 | #if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H) |
38 | #if defined(PTYS_ARE_PTMX) && defined(HAVE_SYS_STROPTS_H) |
43 | # include <sys/stropts.h> /* for I_PUSH */ |
39 | # include <sys/stropts.h> /* for I_PUSH */ |
… | |
… | |
53 | # include <util.h> |
49 | # include <util.h> |
54 | #endif |
50 | #endif |
55 | |
51 | |
56 | #include <cstdio> |
52 | #include <cstdio> |
57 | #include <grp.h> |
53 | #include <grp.h> |
|
|
54 | |
|
|
55 | #include "rxvtutil.h" |
|
|
56 | #include "fdpass.h" |
|
|
57 | #include "ptytty.h" |
58 | |
58 | |
59 | ///////////////////////////////////////////////////////////////////////////// |
59 | ///////////////////////////////////////////////////////////////////////////// |
60 | |
60 | |
61 | /* ------------------------------------------------------------------------- * |
61 | /* ------------------------------------------------------------------------- * |
62 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
62 | * GET PSEUDO TELETYPE - MASTER AND SLAVE * |
… | |
… | |
64 | /* |
64 | /* |
65 | * Returns pty file descriptor, or -1 on failure |
65 | * Returns pty file descriptor, or -1 on failure |
66 | * If successful, ttydev is set to the name of the slave device. |
66 | * If successful, ttydev is set to the name of the slave device. |
67 | * fd_tty _may_ also be set to an open fd to the slave device |
67 | * fd_tty _may_ also be set to an open fd to the slave device |
68 | */ |
68 | */ |
69 | static int |
69 | static inline int |
70 | get_pty (int *fd_tty, char **ttydev) |
70 | get_pty_streams (int *fd_tty, char **ttydev) |
71 | { |
71 | { |
|
|
72 | #if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) |
|
|
73 | # if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_POSIX) || defined(PTYS_ARE_PTMX) |
72 | int pfd; |
74 | int pfd; |
73 | |
75 | |
|
|
76 | # if defined(PTYS_ARE_GETPT) |
|
|
77 | pfd = getpt(); |
|
|
78 | # elif defined(PTYS_ARE_POSIX) |
|
|
79 | pfd = posix_openpt (O_RDWR); |
|
|
80 | # else |
|
|
81 | pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0); |
|
|
82 | # endif |
|
|
83 | if (pfd >= 0) |
|
|
84 | { |
|
|
85 | if (grantpt (pfd) == 0 /* change slave permissions */ |
|
|
86 | && unlockpt (pfd) == 0) |
|
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87 | { /* slave now unlocked */ |
|
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88 | *ttydev = strdup (ptsname (pfd)); /* get slave's name */ |
|
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89 | return pfd; |
|
|
90 | } |
|
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91 | |
|
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92 | close (pfd); |
|
|
93 | } |
|
|
94 | # endif |
|
|
95 | #endif |
|
|
96 | |
|
|
97 | return -1; |
|
|
98 | } |
|
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99 | |
|
|
100 | static inline int |
|
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101 | get_pty_openpty (int *fd_tty, char **ttydev) |
|
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102 | { |
74 | #ifdef PTYS_ARE_OPENPTY |
103 | #ifdef PTYS_ARE_OPENPTY |
75 | char tty_name[sizeof "/dev/pts/????\0"]; |
104 | int pfd; |
76 | |
105 | int res; |
77 | rxvt_privileges(RESTORE); |
106 | char tty_name[32]; |
|
|
107 | |
78 | int res = openpty (&pfd, fd_tty, tty_name, NULL, NULL); |
108 | res = openpty (&pfd, fd_tty, tty_name, NULL, NULL); |
79 | rxvt_privileges(IGNORE); |
|
|
80 | |
|
|
81 | if (res != -1) |
109 | if (res != -1) |
82 | { |
110 | { |
83 | *ttydev = strdup (tty_name); |
111 | *ttydev = strdup (tty_name); |
84 | return pfd; |
112 | return pfd; |
85 | } |
113 | } |
86 | #endif |
114 | #endif |
87 | |
115 | |
|
|
116 | return -1; |
|
|
117 | } |
|
|
118 | |
|
|
119 | static inline int |
|
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120 | get_pty__getpty (int *fd_tty, char **ttydev) |
|
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121 | { |
88 | #ifdef PTYS_ARE__GETPTY |
122 | #ifdef PTYS_ARE__GETPTY |
|
|
123 | int pfd; |
|
|
124 | |
89 | *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
125 | *ttydev = _getpty (&pfd, O_RDWR | O_NONBLOCK | O_NOCTTY, 0622, 0); |
90 | if (*ttydev != NULL) |
126 | if (*ttydev != NULL) |
91 | return pfd; |
127 | return pfd; |
92 | #endif |
128 | #endif |
93 | |
129 | |
94 | #if defined(HAVE_GRANTPT) && defined(HAVE_UNLOCKPT) |
130 | return -1; |
95 | # if defined(PTYS_ARE_GETPT) || defined(PTYS_ARE_POSIX) || defined(PTYS_ARE_PTMX) |
131 | } |
96 | |
132 | |
97 | { |
133 | static inline int |
98 | # ifdef PTYS_ARE_GETPT |
134 | get_pty_ptc (int *fd_tty, char **ttydev) |
99 | pfd = getpt(); |
135 | { |
100 | # else |
|
|
101 | # ifdef PTYS_ARE_POSIX |
|
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102 | pfd = posix_openpt (O_RDWR); |
|
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103 | # else |
|
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104 | pfd = open ("/dev/ptmx", O_RDWR | O_NOCTTY, 0); |
|
|
105 | # endif |
|
|
106 | # endif |
|
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107 | |
|
|
108 | if (pfd >= 0) |
|
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109 | { |
|
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110 | if (grantpt (pfd) == 0 /* change slave permissions */ |
|
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111 | && unlockpt (pfd) == 0) |
|
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112 | { /* slave now unlocked */ |
|
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113 | *ttydev = strdup (ptsname (pfd)); /* get slave's name */ |
|
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114 | return pfd; |
|
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115 | } |
|
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116 | close (pfd); |
|
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117 | } |
|
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118 | } |
|
|
119 | # endif |
|
|
120 | #endif |
|
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121 | |
|
|
122 | #ifdef PTYS_ARE_PTC |
136 | #ifdef PTYS_ARE_PTC |
|
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137 | int pfd; |
|
|
138 | |
123 | if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
139 | if ((pfd = open ("/dev/ptc", O_RDWR | O_NOCTTY, 0)) >= 0) |
124 | { |
140 | { |
125 | *ttydev = strdup (ttyname (pfd)); |
141 | *ttydev = strdup (ttyname (pfd)); |
126 | return pfd; |
142 | return pfd; |
127 | } |
143 | } |
128 | #endif |
144 | #endif |
129 | |
145 | |
|
|
146 | return -1; |
|
|
147 | } |
|
|
148 | |
|
|
149 | static inline int |
|
|
150 | get_pty_clone (int *fd_tty, char **ttydev) |
|
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151 | { |
130 | #ifdef PTYS_ARE_CLONE |
152 | #ifdef PTYS_ARE_CLONE |
|
|
153 | int pfd; |
|
|
154 | |
131 | if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) |
155 | if ((pfd = open ("/dev/ptym/clone", O_RDWR | O_NOCTTY, 0)) >= 0) |
132 | { |
156 | { |
133 | *ttydev = strdup (ptsname (pfd)); |
157 | *ttydev = strdup (ptsname (pfd)); |
134 | return pfd; |
158 | return pfd; |
135 | } |
159 | } |
136 | #endif |
160 | #endif |
137 | |
161 | |
|
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162 | return -1; |
|
|
163 | } |
|
|
164 | |
|
|
165 | static inline int |
|
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166 | get_pty_numeric (int *fd_tty, char **ttydev) |
|
|
167 | { |
138 | #ifdef PTYS_ARE_NUMERIC |
168 | #ifdef PTYS_ARE_NUMERIC |
139 | { |
169 | int pfd; |
140 | int idx; |
170 | int idx; |
141 | char *c1, *c2; |
171 | char *c1, *c2; |
142 | char pty_name[] = "/dev/ptyp???"; |
172 | char pty_name[] = "/dev/ptyp???"; |
143 | char tty_name[] = "/dev/ttyp???"; |
173 | char tty_name[] = "/dev/ttyp???"; |
144 | |
174 | |
145 | c1 = &(pty_name[sizeof (pty_name) - 4]); |
175 | c1 = &(pty_name[sizeof (pty_name) - 4]); |
146 | c2 = &(tty_name[sizeof (tty_name) - 4]); |
176 | c2 = &(tty_name[sizeof (tty_name) - 4]); |
|
|
177 | |
147 | for (idx = 0; idx < 256; idx++) |
178 | for (idx = 0; idx < 256; idx++) |
148 | { |
179 | { |
149 | sprintf (c1, "%d", idx); |
180 | sprintf (c1, "%d", idx); |
150 | sprintf (c2, "%d", idx); |
181 | sprintf (c2, "%d", idx); |
|
|
182 | |
151 | if (access (tty_name, F_OK) < 0) |
183 | if (access (tty_name, F_OK) < 0) |
152 | { |
184 | { |
153 | idx = 256; |
185 | idx = 256; |
154 | break; |
186 | break; |
155 | } |
187 | } |
156 | |
188 | |
157 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
189 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
158 | { |
190 | { |
159 | if (access (tty_name, R_OK | W_OK) == 0) |
191 | if (access (tty_name, R_OK | W_OK) == 0) |
160 | { |
192 | { |
161 | *ttydev = strdup (tty_name); |
193 | *ttydev = strdup (tty_name); |
162 | return pfd; |
194 | return pfd; |
163 | } |
195 | } |
164 | |
196 | |
165 | close (pfd); |
197 | close (pfd); |
166 | } |
198 | } |
167 | } |
199 | } |
168 | } |
|
|
169 | #endif |
200 | #endif |
170 | |
201 | |
|
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202 | return -1; |
|
|
203 | } |
|
|
204 | |
|
|
205 | static inline int |
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206 | get_pty_searched (int *fd_tty, char **ttydev) |
|
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207 | { |
171 | #ifdef PTYS_ARE_SEARCHED |
208 | #ifdef PTYS_ARE_SEARCHED |
172 | { |
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173 | const char *c1, *c2; |
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174 | char pty_name[] = "/dev/pty??"; |
|
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175 | char tty_name[] = "/dev/tty??"; |
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176 | |
|
|
177 | # ifndef PTYCHAR1 |
209 | # ifndef PTYCHAR1 |
178 | # define PTYCHAR1 "pqrstuvwxyz" |
210 | # define PTYCHAR1 "pqrstuvwxyz" |
179 | # endif |
211 | # endif |
180 | # ifndef PTYCHAR2 |
212 | # ifndef PTYCHAR2 |
181 | # define PTYCHAR2 "0123456789abcdef" |
213 | # define PTYCHAR2 "0123456789abcdef" |
182 | # endif |
214 | # endif |
|
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215 | int pfd; |
|
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216 | const char *c1, *c2; |
|
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217 | char pty_name[] = "/dev/pty??"; |
|
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218 | char tty_name[] = "/dev/tty??"; |
183 | |
219 | |
184 | for (c1 = PTYCHAR1; *c1; c1++) |
220 | for (c1 = PTYCHAR1; *c1; c1++) |
185 | { |
221 | { |
186 | pty_name[ (sizeof (pty_name) - 3)] = |
222 | pty_name[ (sizeof (pty_name) - 3)] = |
187 | tty_name[ (sizeof (pty_name) - 3)] = *c1; |
223 | tty_name[ (sizeof (pty_name) - 3)] = *c1; |
|
|
224 | |
188 | for (c2 = PTYCHAR2; *c2; c2++) |
225 | for (c2 = PTYCHAR2; *c2; c2++) |
189 | { |
226 | { |
190 | pty_name[ (sizeof (pty_name) - 2)] = |
227 | pty_name[ (sizeof (pty_name) - 2)] = |
191 | tty_name[ (sizeof (pty_name) - 2)] = *c2; |
228 | tty_name[ (sizeof (pty_name) - 2)] = *c2; |
|
|
229 | |
192 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
230 | if ((pfd = open (pty_name, O_RDWR | O_NOCTTY, 0)) >= 0) |
193 | { |
231 | { |
194 | if (access (tty_name, R_OK | W_OK) == 0) |
232 | if (access (tty_name, R_OK | W_OK) == 0) |
195 | { |
233 | { |
196 | *ttydev = strdup (tty_name); |
234 | *ttydev = strdup (tty_name); |
197 | return pfd; |
235 | return pfd; |
198 | } |
236 | } |
199 | |
237 | |
200 | close (pfd); |
238 | close (pfd); |
201 | } |
239 | } |
202 | } |
240 | } |
203 | } |
241 | } |
204 | } |
|
|
205 | #endif |
242 | #endif |
|
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243 | |
|
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244 | return -1; |
|
|
245 | } |
|
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246 | |
|
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247 | static int |
|
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248 | get_pty (int *fd_tty, char **ttydev) |
|
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249 | { |
|
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250 | int pfd; |
|
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251 | |
|
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252 | if ((pfd = get_pty_streams (fd_tty, ttydev)) != -1 |
|
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253 | || (pfd = get_pty_openpty (fd_tty, ttydev)) != -1 |
|
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254 | || (pfd = get_pty__getpty (fd_tty, ttydev)) != -1 |
|
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255 | || (pfd = get_pty_ptc (fd_tty, ttydev)) != -1 |
|
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256 | || (pfd = get_pty_clone (fd_tty, ttydev)) != -1 |
|
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257 | || (pfd = get_pty_numeric (fd_tty, ttydev)) != -1 |
|
|
258 | || (pfd = get_pty_searched (fd_tty, ttydev)) != -1) |
|
|
259 | return pfd; |
206 | |
260 | |
207 | return -1; |
261 | return -1; |
208 | } |
262 | } |
209 | |
263 | |
210 | /*----------------------------------------------------------------------*/ |
264 | /*----------------------------------------------------------------------*/ |
… | |
… | |
222 | * Make our tty a controlling tty so that /dev/tty points to us |
276 | * Make our tty a controlling tty so that /dev/tty points to us |
223 | */ |
277 | */ |
224 | static int |
278 | static int |
225 | control_tty (int fd_tty) |
279 | control_tty (int fd_tty) |
226 | { |
280 | { |
227 | int fd; |
|
|
228 | |
|
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229 | /* ---------------------------------------- */ |
|
|
230 | setsid (); |
281 | setsid (); |
231 | |
282 | |
232 | /* ---------------------------------------- */ |
|
|
233 | # if defined(PTYS_ARE_PTMX) && defined(I_PUSH) |
283 | #if defined(PTYS_ARE_PTMX) && defined(I_PUSH) |
234 | /* |
284 | /* |
235 | * Push STREAMS modules: |
285 | * Push STREAMS modules: |
236 | * ptem: pseudo-terminal hardware emulation module. |
286 | * ptem: pseudo-terminal hardware emulation module. |
237 | * ldterm: standard terminal line discipline. |
287 | * ldterm: standard terminal line discipline. |
238 | * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
288 | * ttcompat: V7, 4BSD and XENIX STREAMS compatibility module. |
… | |
… | |
246 | * documentation is really unclear about whether it is any close () on |
296 | * documentation is really unclear about whether it is any close () on |
247 | * the master side or the last close () - i.e. a proper STREAMS dismantling |
297 | * the master side or the last close () - i.e. a proper STREAMS dismantling |
248 | * close () - on the master side which causes a hang up to be sent |
298 | * close () - on the master side which causes a hang up to be sent |
249 | * through - Geoff Wing |
299 | * through - Geoff Wing |
250 | */ |
300 | */ |
251 | # ifdef HAVE_ISASTREAM |
301 | # ifdef HAVE_ISASTREAM |
252 | if (isastream (fd_tty) == 1) |
302 | if (isastream (fd_tty) == 1) |
253 | # endif |
303 | # endif |
254 | { |
304 | { |
255 | ioctl (fd_tty, I_PUSH, "ptem"); |
305 | ioctl (fd_tty, I_PUSH, "ptem"); |
256 | ioctl (fd_tty, I_PUSH, "ldterm"); |
306 | ioctl (fd_tty, I_PUSH, "ldterm"); |
257 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
307 | ioctl (fd_tty, I_PUSH, "ttcompat"); |
258 | } |
308 | } |
259 | # endif |
309 | #endif |
260 | /* ---------------------------------------- */ |
310 | |
261 | fd = ioctl (fd_tty, TIOCSCTTY, NULL); |
311 | ioctl (fd_tty, TIOCSCTTY, NULL); |
262 | /* ---------------------------------------- */ |
312 | |
263 | fd = open ("/dev/tty", O_WRONLY); |
313 | int fd = open ("/dev/tty", O_WRONLY); |
264 | if (fd < 0) |
314 | if (fd < 0) |
265 | return -1; /* fatal */ |
315 | return -1; /* fatal */ |
|
|
316 | |
266 | close (fd); |
317 | close (fd); |
267 | /* ---------------------------------------- */ |
|
|
268 | |
318 | |
269 | return 0; |
319 | return 0; |
270 | } |
320 | } |
271 | |
321 | |
272 | void |
322 | void |
… | |
… | |
310 | } |
360 | } |
311 | } |
361 | } |
312 | #endif |
362 | #endif |
313 | } |
363 | } |
314 | |
364 | |
315 | ///////////////////////////////////////////////////////////////////////////// |
|
|
316 | |
|
|
317 | #ifndef NO_SETOWNER_TTYDEV |
|
|
318 | static struct ttyconf { |
365 | static struct ttyconf { |
319 | gid_t gid; |
366 | gid_t gid; |
320 | mode_t mode; |
367 | mode_t mode; |
321 | |
368 | |
322 | ttyconf () |
369 | ttyconf () |
… | |
… | |
331 | } |
378 | } |
332 | else |
379 | else |
333 | #endif /* TTY_GID_SUPPORT */ |
380 | #endif /* TTY_GID_SUPPORT */ |
334 | { |
381 | { |
335 | mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; |
382 | mode = S_IRUSR | S_IWUSR | S_IWGRP | S_IWOTH; |
336 | gid = getgid (); |
383 | gid = 0; |
337 | } |
384 | } |
338 | } |
385 | } |
339 | } ttyconf; |
386 | } ttyconf; |
340 | |
|
|
341 | ///////////////////////////////////////////////////////////////////////////// |
|
|
342 | |
|
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343 | void |
|
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344 | rxvt_ptytty_unix::privileges (rxvt_privaction action) |
|
|
345 | { |
|
|
346 | if (!name || !*name) |
|
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347 | return; |
|
|
348 | |
|
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349 | rxvt_privileges (RESTORE); |
|
|
350 | |
|
|
351 | if (action == SAVE) |
|
|
352 | { |
|
|
353 | # ifndef RESET_TTY_TO_COMMON_DEFAULTS |
|
|
354 | /* store original tty status for restoration rxvt_clean_exit () -- rgg 04/12/95 */ |
|
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355 | if (lstat (name, &savestat) < 0) /* you lose out */ |
|
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356 | ; |
|
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357 | else |
|
|
358 | # endif |
|
|
359 | { |
|
|
360 | saved = true; |
|
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361 | chown (name, getuid (), ttyconf.gid); /* fail silently */ |
|
|
362 | chmod (name, ttyconf.mode); |
|
|
363 | # ifdef HAVE_REVOKE |
|
|
364 | revoke (name); |
|
|
365 | # endif |
|
|
366 | } |
|
|
367 | } |
|
|
368 | else |
|
|
369 | { /* action == RESTORE */ |
|
|
370 | # ifndef RESET_TTY_TO_COMMON_DEFAULTS |
|
|
371 | if (saved) |
|
|
372 | { |
|
|
373 | chmod (name, savestat.st_mode); |
|
|
374 | chown (name, savestat.st_uid, savestat.st_gid); |
|
|
375 | } |
|
|
376 | # else |
|
|
377 | chmod (name, (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH)); |
|
|
378 | chown (name, 0, 0); |
|
|
379 | # endif |
|
|
380 | |
|
|
381 | } |
|
|
382 | |
|
|
383 | rxvt_privileges (IGNORE); |
|
|
384 | } |
|
|
385 | #endif |
|
|
386 | |
387 | |
387 | rxvt_ptytty_unix::rxvt_ptytty_unix () |
388 | rxvt_ptytty_unix::rxvt_ptytty_unix () |
388 | { |
389 | { |
389 | pty = tty = -1; |
390 | pty = tty = -1; |
390 | name = 0; |
391 | name = 0; |
391 | #ifndef NO_SETOWNER_TTYDEV |
|
|
392 | saved = false; |
|
|
393 | #endif |
|
|
394 | #if UTMP_SUPPORT |
392 | #if UTMP_SUPPORT |
395 | cmd_pid = 0; |
393 | cmd_pid = 0; |
396 | #endif |
394 | #endif |
397 | } |
395 | } |
398 | |
396 | |
399 | rxvt_ptytty_unix::~rxvt_ptytty_unix () |
397 | rxvt_ptytty_unix::~rxvt_ptytty_unix () |
400 | { |
398 | { |
|
|
399 | #if UTMP_SUPPORT |
401 | logout (); |
400 | logout (); |
|
|
401 | #endif |
402 | put (); |
402 | put (); |
403 | } |
403 | } |
404 | |
404 | |
405 | void |
405 | void |
406 | rxvt_ptytty_unix::put () |
406 | rxvt_ptytty_unix::put () |
407 | { |
407 | { |
408 | #ifndef NO_SETOWNER_TTYDEV |
408 | chmod (name, RESTORE_TTY_MODE); |
409 | privileges (RESTORE); |
409 | chown (name, 0, ttyconf.gid); |
410 | #endif |
|
|
411 | |
410 | |
412 | if (pty >= 0) close (pty); |
|
|
413 | close_tty (); |
411 | close_tty (); |
|
|
412 | |
|
|
413 | if (pty >= 0) |
|
|
414 | close (pty); |
|
|
415 | |
414 | free (name); |
416 | free (name); |
415 | |
417 | |
416 | pty = tty = -1; |
418 | pty = tty = -1; |
417 | name = 0; |
419 | name = 0; |
418 | } |
420 | } |
… | |
… | |
428 | |
430 | |
429 | /* get slave (tty) */ |
431 | /* get slave (tty) */ |
430 | if (tty < 0) |
432 | if (tty < 0) |
431 | { |
433 | { |
432 | #ifndef NO_SETOWNER_TTYDEV |
434 | #ifndef NO_SETOWNER_TTYDEV |
433 | privileges (SAVE); |
435 | chown (name, getuid (), ttyconf.gid); /* fail silently */ |
|
|
436 | chmod (name, ttyconf.mode); |
|
|
437 | # ifdef HAVE_REVOKE |
|
|
438 | revoke (name); |
|
|
439 | # endif |
434 | #endif |
440 | #endif |
435 | |
441 | |
436 | if ((tty = get_tty (name)) < 0) |
442 | if ((tty = get_tty (name)) < 0) |
437 | { |
443 | { |
438 | put (); |
444 | put (); |
… | |
… | |
441 | } |
447 | } |
442 | |
448 | |
443 | return true; |
449 | return true; |
444 | } |
450 | } |
445 | |
451 | |
|
|
452 | #if PTYTTY_HELPER |
|
|
453 | |
|
|
454 | static int sock_fd; |
|
|
455 | static int pid; |
|
|
456 | |
|
|
457 | struct command |
|
|
458 | { |
|
|
459 | enum { get, login, destroy } type; |
|
|
460 | |
|
|
461 | rxvt_ptytty *id; |
|
|
462 | |
|
|
463 | bool login_shell; |
|
|
464 | int cmd_pid; |
|
|
465 | char hostname[512]; // arbitrary, but should be plenty |
|
|
466 | }; |
|
|
467 | |
|
|
468 | struct rxvt_ptytty_proxy : zero_initialized, rxvt_ptytty |
|
|
469 | { |
|
|
470 | rxvt_ptytty *id; |
|
|
471 | |
|
|
472 | ~rxvt_ptytty_proxy (); |
|
|
473 | |
|
|
474 | bool get (); |
|
|
475 | void login (int cmd_pid, bool login_shell, const char *hostname); |
|
|
476 | }; |
|
|
477 | |
|
|
478 | bool |
|
|
479 | rxvt_ptytty_proxy::get () |
|
|
480 | { |
|
|
481 | command cmd; |
|
|
482 | |
|
|
483 | cmd.type = command::get; |
|
|
484 | |
|
|
485 | write (sock_fd, &cmd, sizeof (cmd)); |
|
|
486 | |
|
|
487 | if (read (sock_fd, &id, sizeof (id)) != sizeof (id)) |
|
|
488 | rxvt_fatal ("protocol error while creating pty using helper process, aborting.\n"); |
|
|
489 | |
|
|
490 | if (!id) |
|
|
491 | return false; |
|
|
492 | |
|
|
493 | if ((pty = rxvt_recv_fd (sock_fd)) < 0 |
|
|
494 | || (tty = rxvt_recv_fd (sock_fd)) < 0) |
|
|
495 | rxvt_fatal ("protocol error while reading pty/tty fds from helper process, aborting.\n"); |
|
|
496 | |
|
|
497 | return true; |
|
|
498 | } |
|
|
499 | |
|
|
500 | void |
|
|
501 | rxvt_ptytty_proxy::login (int cmd_pid, bool login_shell, const char *hostname) |
|
|
502 | { |
|
|
503 | command cmd; |
|
|
504 | |
|
|
505 | cmd.type = command::login; |
|
|
506 | cmd.id = id; |
|
|
507 | cmd.cmd_pid = cmd_pid; |
|
|
508 | cmd.login_shell = login_shell; |
|
|
509 | strncpy (cmd.hostname, hostname, sizeof (cmd.hostname)); |
|
|
510 | |
|
|
511 | write (sock_fd, &cmd, sizeof (cmd)); |
|
|
512 | } |
|
|
513 | |
|
|
514 | rxvt_ptytty_proxy::~rxvt_ptytty_proxy () |
|
|
515 | { |
|
|
516 | command cmd; |
|
|
517 | |
|
|
518 | cmd.type = command::destroy; |
|
|
519 | cmd.id = id; |
|
|
520 | |
|
|
521 | write (sock_fd, &cmd, sizeof (cmd)); |
|
|
522 | } |
|
|
523 | |
|
|
524 | static |
|
|
525 | void serve () |
|
|
526 | { |
|
|
527 | command cmd; |
|
|
528 | vector<rxvt_ptytty *> ptys; |
|
|
529 | |
|
|
530 | while (read (sock_fd, &cmd, sizeof (command)) == sizeof (command)) |
|
|
531 | { |
|
|
532 | if (cmd.type == command::get) |
|
|
533 | { |
|
|
534 | // -> id ptyfd ttyfd |
|
|
535 | cmd.id = new rxvt_ptytty_unix; |
|
|
536 | |
|
|
537 | if (cmd.id->get ()) |
|
|
538 | { |
|
|
539 | write (sock_fd, &cmd.id, sizeof (cmd.id)); |
|
|
540 | ptys.push_back (cmd.id); |
|
|
541 | |
|
|
542 | rxvt_send_fd (sock_fd, cmd.id->pty); |
|
|
543 | rxvt_send_fd (sock_fd, cmd.id->tty); |
|
|
544 | } |
|
|
545 | else |
|
|
546 | { |
|
|
547 | delete cmd.id; |
|
|
548 | cmd.id = 0; |
|
|
549 | write (sock_fd, &cmd.id, sizeof (cmd.id)); |
|
|
550 | } |
|
|
551 | } |
|
|
552 | else if (cmd.type == command::login) |
|
|
553 | { |
|
|
554 | #if UTMP_SUPPORT |
|
|
555 | if (find (ptys.begin (), ptys.end (), cmd.id)) |
|
|
556 | { |
|
|
557 | cmd.hostname[sizeof (cmd.hostname) - 1] = 0; |
|
|
558 | cmd.id->login (cmd.cmd_pid, cmd.login_shell, cmd.hostname); |
|
|
559 | } |
|
|
560 | #endif |
|
|
561 | } |
|
|
562 | else if (cmd.type == command::destroy) |
|
|
563 | { |
|
|
564 | rxvt_ptytty **pty = find (ptys.begin (), ptys.end (), cmd.id); |
|
|
565 | |
|
|
566 | if (pty) |
|
|
567 | { |
|
|
568 | delete *pty; |
|
|
569 | ptys.erase (pty); |
|
|
570 | } |
|
|
571 | } |
|
|
572 | else |
|
|
573 | break; |
|
|
574 | } |
|
|
575 | |
|
|
576 | // destroy all ptys |
|
|
577 | for (rxvt_ptytty **i = ptys.end (); i-- > ptys.begin (); ) |
|
|
578 | delete *i; |
|
|
579 | } |
|
|
580 | |
|
|
581 | void rxvt_ptytty_server () |
|
|
582 | { |
|
|
583 | int sv[2]; |
|
|
584 | |
|
|
585 | if (socketpair (AF_UNIX, SOCK_STREAM, 0, sv)) |
|
|
586 | rxvt_fatal ("could not create socket to communicate with pty/sessiondb helper, aborting.\n"); |
|
|
587 | |
|
|
588 | pid = fork (); |
|
|
589 | |
|
|
590 | if (pid < 0) |
|
|
591 | rxvt_fatal ("could not create pty/sessiondb helper process, aborting.\n"); |
|
|
592 | |
|
|
593 | if (pid) |
|
|
594 | { |
|
|
595 | // client, urxvt |
|
|
596 | sock_fd = sv[0]; |
|
|
597 | close (sv[1]); |
|
|
598 | fcntl (sock_fd, F_SETFD, FD_CLOEXEC); |
|
|
599 | } |
|
|
600 | else |
|
|
601 | { |
|
|
602 | // server, pty-helper |
|
|
603 | sock_fd = sv[1]; |
|
|
604 | |
|
|
605 | for (int fd = 0; fd < 1023; fd++) |
|
|
606 | if (fd != sock_fd) |
|
|
607 | close (fd); |
|
|
608 | |
|
|
609 | serve (); |
|
|
610 | _exit (EXIT_SUCCESS); |
|
|
611 | } |
|
|
612 | } |
|
|
613 | |
|
|
614 | #endif |
|
|
615 | |
|
|
616 | // a "factory" *g* |
|
|
617 | rxvt_ptytty * |
|
|
618 | rxvt_new_ptytty () |
|
|
619 | { |
|
|
620 | #if PTYTTY_HELPER |
|
|
621 | if (pid > 0) |
|
|
622 | // use helper process |
|
|
623 | return new rxvt_ptytty_proxy; |
|
|
624 | else |
|
|
625 | #endif |
|
|
626 | return new rxvt_ptytty_unix; |
|
|
627 | } |
|
|
628 | |
446 | /*----------------------- end-of-file (C source) -----------------------*/ |
629 | /*----------------------- end-of-file (C source) -----------------------*/ |
447 | |
630 | |