Annotation of src/usr.bin/cvs/proto.c, Revision 1.82
1.82 ! joris 1: /* $OpenBSD: proto.c,v 1.81 2005/12/20 18:17:01 xsa Exp $ */
1.1 jfb 2: /*
3: * Copyright (c) 2004 Jean-Francois Brousseau <jfb@openbsd.org>
4: * All rights reserved.
5: *
6: * Redistribution and use in source and binary forms, with or without
7: * modification, are permitted provided that the following conditions
8: * are met:
9: *
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. The name of the author may not be used to endorse or promote products
13: * derived from this software without specific prior written permission.
14: *
15: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
16: * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
17: * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
18: * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
21: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
22: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
23: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
24: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25: */
26: /*
27: * CVS client/server protocol
28: * ==========================
29: *
30: * The following code implements the CVS client/server protocol, which is
31: * documented at the following URL:
1.72 joris 32: * http://www.iam.unibe.ch/~til/documentation/cvs/cvsclient_toc.html
33: * http://www.elegosoft.com/cvs/cvsclient_toc.html
1.1 jfb 34: *
35: * The protocol is split up into two parts; the first part is the client side
36: * of things and is composed of all the response handlers, which are all named
37: * with a prefix of "cvs_resp_". The second part is the set of request
38: * handlers used by the server. These handlers process the request and
39: * generate the appropriate response to send back. The prefix for request
40: * handlers is "cvs_req_".
41: *
42: */
43:
44: #include <sys/types.h>
45: #include <sys/stat.h>
46:
1.56 xsa 47: #include <errno.h>
1.1 jfb 48: #include <fcntl.h>
1.56 xsa 49: #include <libgen.h>
50: #include <pwd.h>
1.1 jfb 51: #include <stdio.h>
52: #include <stdlib.h>
1.56 xsa 53: #include <string.h>
1.1 jfb 54: #include <unistd.h>
55:
56: #include "cvs.h"
57: #include "log.h"
1.13 jfb 58: #include "proto.h"
1.1 jfb 59:
60:
1.11 jfb 61: /* request flags */
1.68 xsa 62: #define CVS_REQF_RESP 0x01
1.11 jfb 63:
64:
1.68 xsa 65: static int cvs_initlog(void);
1.1 jfb 66:
1.18 jfb 67: struct cvs_req cvs_requests[] = {
68: { CVS_REQ_DIRECTORY, "Directory", 0 },
69: { CVS_REQ_MAXDOTDOT, "Max-dotdot", 0 },
70: { CVS_REQ_STATICDIR, "Static-directory", 0 },
71: { CVS_REQ_STICKY, "Sticky", 0 },
72: { CVS_REQ_ENTRY, "Entry", 0 },
73: { CVS_REQ_ENTRYEXTRA, "EntryExtra", 0 },
74: { CVS_REQ_CHECKINTIME, "Checkin-time", 0 },
75: { CVS_REQ_MODIFIED, "Modified", 0 },
76: { CVS_REQ_ISMODIFIED, "Is-modified", 0 },
77: { CVS_REQ_UNCHANGED, "Unchanged", 0 },
78: { CVS_REQ_USEUNCHANGED, "UseUnchanged", 0 },
79: { CVS_REQ_NOTIFY, "Notify", 0 },
80: { CVS_REQ_NOTIFYUSER, "NotifyUser", 0 },
81: { CVS_REQ_QUESTIONABLE, "Questionable", 0 },
82: { CVS_REQ_CASE, "Case", 0 },
83: { CVS_REQ_UTF8, "Utf8", 0 },
84: { CVS_REQ_ARGUMENT, "Argument", 0 },
85: { CVS_REQ_ARGUMENTX, "Argumentx", 0 },
86: { CVS_REQ_GLOBALOPT, "Global_option", 0 },
87: { CVS_REQ_GZIPSTREAM, "Gzip-stream", 0 },
88: { CVS_REQ_READCVSRC2, "read-cvsrc2", 0 },
89: { CVS_REQ_READWRAP, "read-cvswrappers", 0 },
90: { CVS_REQ_READIGNORE, "read-cvsignore", 0 },
91: { CVS_REQ_ERRIFREADER, "Error-If-Reader", 0 },
92: { CVS_REQ_VALIDRCSOPT, "Valid-RcsOptions", 0 },
93: { CVS_REQ_SET, "Set", 0 },
94: { CVS_REQ_XPANDMOD, "expand-modules", CVS_REQF_RESP },
1.26 jfb 95: { CVS_REQ_LOG, "log", CVS_REQF_RESP },
1.18 jfb 96: { CVS_REQ_CO, "co", CVS_REQF_RESP },
97: { CVS_REQ_EXPORT, "export", CVS_REQF_RESP },
1.26 jfb 98: { CVS_REQ_ANNOTATE, "annotate", CVS_REQF_RESP },
99: { CVS_REQ_RDIFF, "rdiff", CVS_REQF_RESP },
1.18 jfb 100: { CVS_REQ_RTAG, "rtag", CVS_REQF_RESP },
101: { CVS_REQ_INIT, "init", CVS_REQF_RESP },
102: { CVS_REQ_STATUS, "status", CVS_REQF_RESP },
103: { CVS_REQ_UPDATE, "update", CVS_REQF_RESP },
1.26 jfb 104: { CVS_REQ_HISTORY, "history", CVS_REQF_RESP },
1.18 jfb 105: { CVS_REQ_IMPORT, "import", CVS_REQF_RESP },
106: { CVS_REQ_ADD, "add", CVS_REQF_RESP },
107: { CVS_REQ_REMOVE, "remove", CVS_REQF_RESP },
108: { CVS_REQ_RELEASE, "release", CVS_REQF_RESP },
109: { CVS_REQ_ROOT, "Root", 0 },
110: { CVS_REQ_VALIDRESP, "Valid-responses", 0 },
111: { CVS_REQ_VALIDREQ, "valid-requests", CVS_REQF_RESP },
112: { CVS_REQ_VERSION, "version", CVS_REQF_RESP },
113: { CVS_REQ_NOOP, "noop", CVS_REQF_RESP },
114: { CVS_REQ_DIFF, "diff", CVS_REQF_RESP },
1.29 jfb 115: { CVS_REQ_CI, "ci", CVS_REQF_RESP },
1.35 jfb 116: { CVS_REQ_TAG, "tag", CVS_REQF_RESP },
1.41 joris 117: { CVS_REQ_ADMIN, "admin", CVS_REQF_RESP },
1.76 xsa 118: { CVS_REQ_WATCHERS, "watchers", CVS_REQF_RESP },
1.79 moritz 119: { CVS_REQ_WATCH_ON, "watch-on", CVS_REQF_RESP },
120: { CVS_REQ_WATCH_OFF, "watch-off", CVS_REQF_RESP },
121: { CVS_REQ_WATCH_ADD, "watch-add", CVS_REQF_RESP },
122: { CVS_REQ_WATCH_REMOVE, "watch-remove", CVS_REQF_RESP },
1.78 xsa 123: { CVS_REQ_EDITORS, "editors", CVS_REQF_RESP },
1.1 jfb 124: };
125:
1.18 jfb 126: struct cvs_resp cvs_responses[] = {
127: { CVS_RESP_OK, "ok" },
128: { CVS_RESP_ERROR, "error" },
129: { CVS_RESP_VALIDREQ, "Valid-requests" },
130: { CVS_RESP_M, "M" },
131: { CVS_RESP_MBINARY, "Mbinary" },
132: { CVS_RESP_MT, "MT" },
133: { CVS_RESP_E, "E" },
134: { CVS_RESP_F, "F" },
135: { CVS_RESP_CREATED, "Created" },
136: { CVS_RESP_UPDATED, "Updated" },
137: { CVS_RESP_UPDEXIST, "Update-existing" },
138: { CVS_RESP_MERGED, "Merged" },
139: { CVS_RESP_REMOVED, "Removed" },
1.63 joris 140: { CVS_RESP_RMENTRY, "Remove-entry" },
1.18 jfb 141: { CVS_RESP_CKSUM, "Checksum" },
142: { CVS_RESP_CLRSTATDIR, "Clear-static-directory" },
143: { CVS_RESP_SETSTATDIR, "Set-static-directory" },
144: { CVS_RESP_NEWENTRY, "New-entry" },
145: { CVS_RESP_CHECKEDIN, "Checked-in" },
146: { CVS_RESP_MODE, "Mode" },
147: { CVS_RESP_MODTIME, "Mod-time" },
148: { CVS_RESP_MODXPAND, "Module-expansion" },
149: { CVS_RESP_SETSTICKY, "Set-sticky" },
150: { CVS_RESP_CLRSTICKY, "Clear-sticky" },
151: { CVS_RESP_RCSDIFF, "Rcs-diff" },
152: { CVS_RESP_TEMPLATE, "Template" },
1.34 jfb 153: { CVS_RESP_COPYFILE, "Copy-file" },
1.1 jfb 154: };
155:
1.68 xsa 156: #define CVS_NBREQ (sizeof(cvs_requests)/sizeof(cvs_requests[0]))
157: #define CVS_NBRESP (sizeof(cvs_responses)/sizeof(cvs_responses[0]))
1.17 jfb 158:
159: /* hack to receive the remote version without outputting it */
1.18 jfb 160: u_int cvs_version_sent = 0;
1.17 jfb 161:
1.13 jfb 162: static char cvs_proto_buf[4096];
163:
164: /*
1.37 david 165: * Output files for protocol logging when the CVS_CLIENT_LOG environment
1.13 jfb 166: * variable is set.
167: */
168: static int cvs_server_logon = 0;
169: static FILE *cvs_server_inlog = NULL;
170: static FILE *cvs_server_outlog = NULL;
171:
1.28 jfb 172: static pid_t cvs_subproc_pid;
173:
1.32 jfb 174: /* last directory sent with cvs_senddir() */
175: static char cvs_lastdir[MAXPATHLEN] = "";
176:
1.13 jfb 177:
178: /*
179: * cvs_connect()
180: *
181: * Open a client connection to the cvs server whose address is given in
182: * the <root> variable. The method used to connect depends on the
183: * setting of the CVS_RSH variable.
1.17 jfb 184: * Once the connection has been established, we first send the list of
185: * responses we support and request the list of supported requests from the
186: * server. Then, a version request is sent and various global flags are sent.
1.13 jfb 187: */
1.82 ! joris 188: void
1.13 jfb 189: cvs_connect(struct cvsroot *root)
190: {
1.82 ! joris 191: size_t len;
1.20 jfb 192: int argc, infd[2], outfd[2], errfd[2];
1.71 xsa 193: char *argv[16], *cvs_server_cmd, tmsg[1024], *vresp;
1.13 jfb 194:
1.82 ! joris 195: if (root->cr_method == CVS_METHOD_PSERVER)
! 196: fatal("no pserver support due to security issues");
! 197: else if ((root->cr_method == CVS_METHOD_KSERVER) ||
1.36 jfb 198: (root->cr_method == CVS_METHOD_GSERVER) ||
199: (root->cr_method == CVS_METHOD_EXT) ||
1.82 ! joris 200: (root->cr_method == CVS_METHOD_FORK))
! 201: fatal("connection method not supported yet");
1.33 jfb 202:
203: if (root->cr_flags & CVS_ROOT_CONNECTED) {
204: cvs_log(LP_NOTICE, "already connected to CVSROOT");
1.82 ! joris 205: return;
1.33 jfb 206: }
207:
1.82 ! joris 208: if (pipe(infd) == -1)
! 209: fatal("failed to create input pipe for client connection");
1.13 jfb 210:
1.82 ! joris 211: if (pipe(outfd) == -1)
! 212: fatal("failed to create output pipe for client connection");
1.13 jfb 213:
1.82 ! joris 214: if (pipe(errfd) == -1)
! 215: fatal("failed to create error pipe for client connection");
1.20 jfb 216:
1.28 jfb 217: cvs_subproc_pid = fork();
218: if (cvs_subproc_pid == -1) {
1.82 ! joris 219: fatal("failed to fork for cvs server connection");
1.30 deraadt 220: } else if (cvs_subproc_pid == 0) {
1.13 jfb 221: if ((dup2(infd[0], STDIN_FILENO) == -1) ||
1.82 ! joris 222: (dup2(outfd[1], STDOUT_FILENO) == -1))
! 223: fatal("failed to setup standard streams for cvs server");
! 224:
1.13 jfb 225: (void)close(infd[1]);
226: (void)close(outfd[0]);
1.20 jfb 227: (void)close(errfd[0]);
1.13 jfb 228:
229: argc = 0;
230: argv[argc++] = cvs_rsh;
231:
232: if (root->cr_user != NULL) {
233: argv[argc++] = "-l";
234: argv[argc++] = root->cr_user;
235: }
236:
237: cvs_server_cmd = getenv("CVS_SERVER");
238: if (cvs_server_cmd == NULL)
1.20 jfb 239: cvs_server_cmd = CVS_SERVER_DEFAULT;
1.13 jfb 240:
241: argv[argc++] = root->cr_host;
242: argv[argc++] = cvs_server_cmd;
243: argv[argc++] = "server";
244: argv[argc] = NULL;
1.71 xsa 245:
246: if (cvs_trace == 1) {
247: tmsg[0] = '\0';
248: for (argc = 0; argv[argc] != NULL; argc++) {
1.82 ! joris 249: len = strlcat(tmsg, argv[argc], sizeof(tmsg));
! 250: if (len >= sizeof(tmsg))
! 251: fatal("truncation in cvs_connect");
! 252:
! 253: len = strlcat(tmsg, " ", sizeof(tmsg));
! 254: if (len >= sizeof(tmsg))
! 255: fatal("truncation in cvs_connect");
1.71 xsa 256: }
257: }
1.82 ! joris 258:
1.71 xsa 259: cvs_log(LP_TRACE, "Starting server: %s", tmsg);
1.13 jfb 260:
261: execvp(argv[0], argv);
1.82 ! joris 262: fatal("failed to execute cvs server");
1.13 jfb 263: }
264:
265: /* we are the parent */
266: (void)close(infd[0]);
267: (void)close(outfd[1]);
1.20 jfb 268: (void)close(errfd[1]);
1.13 jfb 269:
270: root->cr_srvin = fdopen(infd[1], "w");
1.82 ! joris 271: if (root->cr_srvin == NULL)
! 272: fatal("failed to create pipe stream");
1.13 jfb 273:
274: root->cr_srvout = fdopen(outfd[0], "r");
1.82 ! joris 275: if (root->cr_srvout == NULL)
! 276: fatal("failed to create pipe stream");
1.20 jfb 277:
1.13 jfb 278: /* make the streams line-buffered */
1.75 xsa 279: (void)setvbuf(root->cr_srvin, NULL, _IOLBF, (size_t)0);
280: (void)setvbuf(root->cr_srvout, NULL, _IOLBF, (size_t)0);
1.13 jfb 281:
282: cvs_initlog();
283:
284: /*
285: * Send the server the list of valid responses, then ask for valid
286: * requests.
287: */
288:
1.82 ! joris 289: vresp = cvs_resp_getvalid();
! 290: cvs_sendreq(root, CVS_REQ_VALIDRESP, vresp);
1.80 joris 291: xfree(vresp);
1.13 jfb 292:
1.82 ! joris 293: cvs_sendreq(root, CVS_REQ_VALIDREQ, NULL);
1.13 jfb 294:
1.62 xsa 295: /* send the CVSROOT to the server */
1.82 ! joris 296: cvs_sendreq(root, CVS_REQ_ROOT, root->cr_dir);
1.54 joris 297:
1.40 jfb 298: /* don't fail if this request doesn't work */
1.82 ! joris 299: cvs_sendreq(root, CVS_REQ_VERSION, NULL);
1.17 jfb 300:
1.13 jfb 301: /* now share our global options with the server */
1.82 ! joris 302: if (verbosity <= 1)
! 303: cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-q");
! 304: if (verbosity == 0)
! 305: cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-Q");
! 306:
! 307: if (cvs_noexec == 1)
! 308: cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-n");
! 309:
! 310: if (cvs_nolog == 1)
! 311: cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-l");
! 312:
! 313: if (cvs_readonly == 1)
! 314: cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-r");
1.40 jfb 315:
1.82 ! joris 316: if (cvs_trace == 1)
! 317: cvs_sendreq(root, CVS_REQ_GLOBALOPT, "-t");
1.13 jfb 318:
319: /* not sure why, but we have to send this */
1.82 ! joris 320: cvs_sendreq(root, CVS_REQ_USEUNCHANGED, NULL);
1.13 jfb 321:
322: cvs_log(LP_DEBUG, "connected to %s", root->cr_host);
323:
1.33 jfb 324: root->cr_flags |= CVS_ROOT_CONNECTED;
1.13 jfb 325: }
326:
327:
328: /*
329: * cvs_disconnect()
330: *
331: * Disconnect from the cvs server.
332: */
333: void
334: cvs_disconnect(struct cvsroot *root)
335: {
1.33 jfb 336: if (!(root->cr_flags & CVS_ROOT_CONNECTED))
337: return;
338:
1.13 jfb 339: cvs_log(LP_DEBUG, "closing connection to %s", root->cr_host);
1.82 ! joris 340:
1.13 jfb 341: if (root->cr_srvin != NULL) {
342: (void)fclose(root->cr_srvin);
343: root->cr_srvin = NULL;
344: }
345: if (root->cr_srvout != NULL) {
346: (void)fclose(root->cr_srvout);
347: root->cr_srvout = NULL;
348: }
1.33 jfb 349:
350: root->cr_flags &= ~CVS_ROOT_CONNECTED;
1.13 jfb 351: }
352:
1.1 jfb 353:
354: /*
355: * cvs_req_getbyid()
356: *
357: */
1.13 jfb 358: struct cvs_req*
1.1 jfb 359: cvs_req_getbyid(int reqid)
360: {
361: u_int i;
362:
363: for (i = 0; i < CVS_NBREQ; i++)
364: if (cvs_requests[i].req_id == reqid)
1.13 jfb 365: return &(cvs_requests[i]);
1.31 tedu 366:
1.1 jfb 367: return (NULL);
368: }
369:
370:
371: /*
372: * cvs_req_getbyname()
373: */
1.13 jfb 374: struct cvs_req*
1.1 jfb 375: cvs_req_getbyname(const char *rname)
376: {
377: u_int i;
378:
379: for (i = 0; i < CVS_NBREQ; i++)
380: if (strcmp(cvs_requests[i].req_str, rname) == 0)
1.13 jfb 381: return &(cvs_requests[i]);
1.1 jfb 382:
1.13 jfb 383: return (NULL);
1.1 jfb 384: }
385:
386:
387: /*
388: * cvs_req_getvalid()
389: *
390: * Build a space-separated list of all the requests that this protocol
391: * implementation supports.
392: */
1.67 xsa 393: char *
1.1 jfb 394: cvs_req_getvalid(void)
395: {
396: u_int i;
397: size_t len;
398: char *vrstr;
399: BUF *buf;
400:
1.75 xsa 401: buf = cvs_buf_alloc((size_t)512, BUF_AUTOEXT);
1.1 jfb 402:
403: cvs_buf_set(buf, cvs_requests[0].req_str,
1.75 xsa 404: strlen(cvs_requests[0].req_str), (size_t)0);
1.1 jfb 405:
406: for (i = 1; i < CVS_NBREQ; i++) {
1.81 xsa 407: cvs_buf_putc(buf, ' ');
408: cvs_buf_append(buf, cvs_requests[i].req_str,
409: strlen(cvs_requests[i].req_str));
1.1 jfb 410: }
411:
412: /* NUL-terminate */
1.81 xsa 413: cvs_buf_putc(buf, '\0');
1.1 jfb 414:
1.70 moritz 415: len = cvs_buf_len(buf);
1.80 joris 416: vrstr = (char *)xmalloc(len);
1.75 xsa 417: cvs_buf_copy(buf, (size_t)0, vrstr, len);
1.1 jfb 418: cvs_buf_free(buf);
419:
420: return (vrstr);
421: }
422:
423:
424: /*
425: * cvs_resp_getbyid()
426: *
427: */
1.13 jfb 428: struct cvs_resp*
1.1 jfb 429: cvs_resp_getbyid(int respid)
430: {
431: u_int i;
432:
1.44 tedu 433: for (i = 0; i < CVS_NBRESP; i++)
1.13 jfb 434: if (cvs_responses[i].resp_id == (u_int)respid)
435: return &(cvs_responses[i]);
1.31 tedu 436:
1.1 jfb 437: return (NULL);
438: }
439:
440:
441: /*
442: * cvs_resp_getbyname()
443: */
1.67 xsa 444: struct cvs_resp *
1.1 jfb 445: cvs_resp_getbyname(const char *rname)
446: {
447: u_int i;
448:
1.44 tedu 449: for (i = 0; i < CVS_NBRESP; i++)
1.1 jfb 450: if (strcmp(cvs_responses[i].resp_str, rname) == 0)
1.13 jfb 451: return &(cvs_responses[i]);
1.1 jfb 452:
1.13 jfb 453: return (NULL);
1.1 jfb 454: }
455:
456:
457: /*
458: * cvs_resp_getvalid()
459: *
460: * Build a space-separated list of all the responses that this protocol
461: * implementation supports.
462: */
1.67 xsa 463: char *
1.1 jfb 464: cvs_resp_getvalid(void)
465: {
466: u_int i;
467: size_t len;
468: char *vrstr;
469: BUF *buf;
470:
1.75 xsa 471: buf = cvs_buf_alloc((size_t)512, BUF_AUTOEXT);
1.1 jfb 472:
473: cvs_buf_set(buf, cvs_responses[0].resp_str,
1.75 xsa 474: strlen(cvs_responses[0].resp_str), (size_t)0);
1.1 jfb 475:
476: for (i = 1; i < CVS_NBRESP; i++) {
1.81 xsa 477: cvs_buf_putc(buf, ' ');
478: cvs_buf_append(buf, cvs_responses[i].resp_str,
479: strlen(cvs_responses[i].resp_str));
1.1 jfb 480: }
481:
482: /* NUL-terminate */
1.81 xsa 483: cvs_buf_putc(buf, '\0');
1.1 jfb 484:
1.70 moritz 485: len = cvs_buf_len(buf);
1.80 joris 486: vrstr = (char *)xmalloc(len);
1.75 xsa 487: cvs_buf_copy(buf, (size_t)0, vrstr, len);
1.1 jfb 488: cvs_buf_free(buf);
489:
490: return (vrstr);
491: }
492:
493:
494: /*
495: * cvs_sendfile()
496: *
497: * Send the mode and size of a file followed by the file's contents.
498: * Returns 0 on success, or -1 on failure.
499: */
1.82 ! joris 500: void
1.13 jfb 501: cvs_sendfile(struct cvsroot *root, const char *path)
1.1 jfb 502: {
1.51 xsa 503: int fd, l;
1.1 jfb 504: ssize_t ret;
505: char buf[4096];
506: struct stat st;
507:
1.38 jfb 508: cvs_log(LP_TRACE, "Sending file `%s' to server", basename(path));
509:
1.1 jfb 510: if (stat(path, &st) == -1) {
1.82 ! joris 511: fatal("cvs_sendfile(): stat failed on '%s': %s",
! 512: path, strerror(errno));
1.1 jfb 513: }
514:
1.82 ! joris 515: cvs_modetostr(st.st_mode, buf, sizeof(buf));
1.24 jfb 516:
1.1 jfb 517: fd = open(path, O_RDONLY, 0);
518: if (fd == -1) {
1.82 ! joris 519: fatal("cvs_sendfile(): failed to open '%s': %s",
! 520: path, strerror(errno));
1.1 jfb 521: }
522:
1.82 ! joris 523: cvs_sendln(root, buf);
! 524:
1.51 xsa 525: l = snprintf(buf, sizeof(buf), "%lld\n", st.st_size);
526: if (l == -1 || l >= (int)sizeof(buf))
1.82 ! joris 527: fatal("overflow in cvs_sendfile");
1.51 xsa 528:
1.82 ! joris 529: cvs_sendln(root, buf);
1.1 jfb 530:
531: while ((ret = read(fd, buf, sizeof(buf))) != 0) {
532: if (ret == -1) {
1.24 jfb 533: (void)close(fd);
1.82 ! joris 534: fatal("cvs_sendfile: read error on '%s'", path);
1.1 jfb 535: }
536:
1.82 ! joris 537: cvs_sendraw(root, buf, (size_t)ret);
1.1 jfb 538: }
539:
540: (void)close(fd);
541: }
542:
543:
544: /*
545: * cvs_recvfile()
546: *
547: * Receive the mode and size of a file followed the file's contents and
548: * create or update the file whose path is <path> with the received
549: * information.
550: */
1.14 jfb 551: BUF*
552: cvs_recvfile(struct cvsroot *root, mode_t *mode)
1.1 jfb 553: {
554: size_t len;
555: ssize_t ret;
556: off_t fsz, cnt;
557: char buf[4096], *ep;
1.14 jfb 558: BUF *fbuf;
559:
560: fbuf = cvs_buf_alloc(sizeof(buf), BUF_AUTOEXT);
1.1 jfb 561:
1.13 jfb 562: if ((cvs_getln(root, buf, sizeof(buf)) < 0) ||
1.14 jfb 563: (cvs_strtomode(buf, mode) < 0)) {
1.44 tedu 564: cvs_buf_free(fbuf);
1.14 jfb 565: return (NULL);
1.1 jfb 566: }
567:
1.50 joris 568: if (cvs_getln(root, buf, sizeof(buf)) < 0) {
569: cvs_buf_free(fbuf);
570: return (NULL);
571: }
1.1 jfb 572:
573: fsz = (off_t)strtol(buf, &ep, 10);
574: if (*ep != '\0') {
575: cvs_log(LP_ERR, "parse error in file size transmission");
1.44 tedu 576: cvs_buf_free(fbuf);
1.14 jfb 577: return (NULL);
1.1 jfb 578: }
579:
580: cnt = 0;
581: do {
582: len = MIN(sizeof(buf), (size_t)(fsz - cnt));
1.6 jfb 583: if (len == 0)
584: break;
1.13 jfb 585: ret = cvs_recvraw(root, buf, len);
1.1 jfb 586: if (ret == -1) {
1.14 jfb 587: cvs_buf_free(fbuf);
588: return (NULL);
1.1 jfb 589: }
590:
1.14 jfb 591: if (cvs_buf_append(fbuf, buf, (size_t)ret) == -1) {
592: cvs_log(LP_ERR,
593: "failed to append received file data");
594: cvs_buf_free(fbuf);
595: return (NULL);
1.1 jfb 596: }
597:
598: cnt += (off_t)ret;
599: } while (cnt < fsz);
600:
1.14 jfb 601: return (fbuf);
1.1 jfb 602: }
1.12 jfb 603:
604: /*
605: * cvs_sendreq()
606: *
607: * Send a request to the server of type <rid>, with optional arguments
608: * contained in <arg>, which should not be terminated by a newline.
609: * Returns 0 on success, or -1 on failure.
610: */
1.82 ! joris 611: void
1.13 jfb 612: cvs_sendreq(struct cvsroot *root, u_int rid, const char *arg)
1.12 jfb 613: {
1.51 xsa 614: int ret, l;
1.13 jfb 615: struct cvs_req *req;
1.12 jfb 616:
1.82 ! joris 617: if (root->cr_srvin == NULL)
! 618: fatal("cannot send request %u: Not connected", rid);
1.12 jfb 619:
1.13 jfb 620: req = cvs_req_getbyid(rid);
1.82 ! joris 621: if (req == NULL)
! 622: fatal("unsupported request type %u", rid);
1.12 jfb 623:
1.18 jfb 624: /* is this request supported by the server? */
625: if (!CVS_GETVR(root, req->req_id)) {
1.57 joris 626: if (rid == CVS_REQ_VERSION) {
1.82 ! joris 627: cvs_sendreq(root, CVS_REQ_NOOP, arg);
1.57 joris 628: } else {
629: cvs_log(LP_WARN,
630: "remote end does not support request `%s'",
631: req->req_str);
632: }
1.82 ! joris 633:
! 634: return;
1.18 jfb 635: }
636:
1.51 xsa 637: l = snprintf(cvs_proto_buf, sizeof(cvs_proto_buf), "%s%s%s\n",
1.13 jfb 638: req->req_str, (arg == NULL) ? "" : " ", (arg == NULL) ? "" : arg);
1.51 xsa 639: if (l == -1 || l >= (int)sizeof(cvs_proto_buf))
1.82 ! joris 640: fatal("overflow in cvs_sendreq");
1.12 jfb 641:
642: if (cvs_server_inlog != NULL)
1.13 jfb 643: fputs(cvs_proto_buf, cvs_server_inlog);
1.12 jfb 644:
1.13 jfb 645: ret = fputs(cvs_proto_buf, root->cr_srvin);
1.82 ! joris 646: if (ret == EOF)
! 647: fatal("failed to send request to server");
1.17 jfb 648:
649: if (rid == CVS_REQ_VERSION)
650: cvs_version_sent = 1;
1.12 jfb 651:
1.13 jfb 652: if (req->req_flags & CVS_REQF_RESP)
1.82 ! joris 653: cvs_getresp(root);
1.12 jfb 654: }
655:
656:
657: /*
658: * cvs_getresp()
659: *
660: * Get a response from the server. This call will actually read and handle
661: * responses from the server until one of the response handlers returns
1.37 david 662: * non-zero (either an error occurred or the end of the response was reached).
1.12 jfb 663: * Returns the number of handled commands on success, or -1 on failure.
664: */
1.82 ! joris 665: void
1.13 jfb 666: cvs_getresp(struct cvsroot *root)
1.12 jfb 667: {
1.82 ! joris 668: int ret;
1.13 jfb 669: size_t len;
1.12 jfb 670:
671: do {
672: /* wait for incoming data */
1.74 xsa 673: if (fgets(cvs_proto_buf, (int)sizeof(cvs_proto_buf),
1.12 jfb 674: root->cr_srvout) == NULL) {
675: if (feof(root->cr_srvout))
1.82 ! joris 676: return;
! 677: fatal("failed to read response from server");
1.12 jfb 678: }
679:
680: if (cvs_server_outlog != NULL)
1.13 jfb 681: fputs(cvs_proto_buf, cvs_server_outlog);
1.12 jfb 682:
1.13 jfb 683: if ((len = strlen(cvs_proto_buf)) != 0) {
1.42 joris 684: /* if len - 1 != '\n' the line is truncated */
1.43 joris 685: if (cvs_proto_buf[len - 1] == '\n')
1.13 jfb 686: cvs_proto_buf[--len] = '\0';
1.12 jfb 687: }
688:
1.13 jfb 689: ret = cvs_resp_handle(root, cvs_proto_buf);
1.12 jfb 690: } while (ret == 0);
691: }
692:
693:
694: /*
1.13 jfb 695: * cvs_getln()
696: *
1.18 jfb 697: * Get a line from the remote end and store it in <lbuf>. The terminating
1.13 jfb 698: * newline character is stripped from the result.
1.55 jfb 699: * Returns the length in bytes of the line (not including the NUL byte), or
700: * -1 on failure.
1.13 jfb 701: */
702: int
703: cvs_getln(struct cvsroot *root, char *lbuf, size_t len)
704: {
705: size_t rlen;
1.18 jfb 706: FILE *in;
1.13 jfb 707:
1.18 jfb 708: if (cvs_cmdop == CVS_OP_SERVER)
709: in = stdin;
710: else
711: in = root->cr_srvout;
712:
1.74 xsa 713: if (fgets(lbuf, (int)len, in) == NULL) {
1.18 jfb 714: if (ferror(in)) {
715: cvs_log(LP_ERRNO, "failed to read line");
1.13 jfb 716: return (-1);
717: }
718:
1.18 jfb 719: if (feof(in))
1.13 jfb 720: *lbuf = '\0';
721: }
722:
723: if (cvs_server_outlog != NULL)
724: fputs(lbuf, cvs_server_outlog);
725:
726: rlen = strlen(lbuf);
727: if ((rlen > 0) && (lbuf[rlen - 1] == '\n'))
728: lbuf[--rlen] = '\0';
729:
1.55 jfb 730: return (rlen);
1.13 jfb 731: }
732:
1.19 jfb 733:
1.13 jfb 734: /*
1.12 jfb 735: * cvs_sendresp()
736: *
1.19 jfb 737: * Send a response of type <rid> to the client, with optional arguments
1.12 jfb 738: * contained in <arg>, which should not be terminated by a newline.
739: * Returns 0 on success, or -1 on failure.
740: */
741: int
742: cvs_sendresp(u_int rid, const char *arg)
743: {
744: int ret;
1.19 jfb 745: struct cvs_resp *resp;
1.12 jfb 746:
747: resp = cvs_resp_getbyid(rid);
1.13 jfb 748: if (resp == NULL) {
1.12 jfb 749: cvs_log(LP_ERR, "unsupported response type %u", rid);
750: return (-1);
751: }
752:
1.19 jfb 753: ret = fputs(resp->resp_str, stdout);
1.12 jfb 754: if (ret == EOF) {
755: cvs_log(LP_ERRNO, "failed to send response to client");
1.30 deraadt 756: } else {
1.19 jfb 757: if (arg != NULL) {
758: putc(' ', stdout);
759: fputs(arg, stdout);
760: }
1.12 jfb 761: putc('\n', stdout);
762: }
763: return (0);
764: }
765:
766:
1.19 jfb 767: #ifdef notyet
1.12 jfb 768: /*
769: * cvs_getreq()
770: *
771: * Get a request from the client.
772: */
773: int
774: cvs_getreq(void)
775: {
776: int nbcmd;
777:
778: nbcmd = 0;
779:
780: do {
781: /* wait for incoming data */
1.74 xsa 782: if (fgets(cvs_proto_buf, (int)sizeof(cvs_proto_buf),
1.12 jfb 783: stdin) == NULL) {
784: if (feof(stdin))
785: return (0);
786: cvs_log(LP_ERRNO,
787: "failed to read request from client");
788: return (-1);
789: }
790:
1.13 jfb 791: if ((len = strlen(cvs_proto_buf)) != 0) {
792: if (cvs_proto_buf[len - 1] != '\n') {
1.12 jfb 793: /* truncated line */
1.30 deraadt 794: } else
1.13 jfb 795: cvs_proto_buf[--len] = '\0';
1.12 jfb 796: }
797:
1.13 jfb 798: ret = cvs_resp_handle(cvs_proto_buf);
1.12 jfb 799: } while (ret == 0);
800: }
801: #endif
802:
803:
804: /*
805: * cvs_sendln()
806: *
1.18 jfb 807: * Send a single line <line> string to the remote end. The line is sent as is,
1.12 jfb 808: * without any modifications.
809: */
1.82 ! joris 810: void
1.12 jfb 811: cvs_sendln(struct cvsroot *root, const char *line)
812: {
813: int nl;
814: size_t len;
1.18 jfb 815: FILE *out;
816:
817: if (cvs_cmdop == CVS_OP_SERVER)
818: out = stdout;
819: else
820: out = root->cr_srvin;
1.12 jfb 821:
822: nl = 0;
823: len = strlen(line);
824:
825: if ((len > 0) && (line[len - 1] != '\n'))
826: nl = 1;
827:
828: if (cvs_server_inlog != NULL) {
829: fputs(line, cvs_server_inlog);
830: if (nl)
1.55 jfb 831: putc('\n', cvs_server_inlog);
1.12 jfb 832: }
1.18 jfb 833: fputs(line, out);
1.12 jfb 834: if (nl)
1.55 jfb 835: putc('\n', out);
1.12 jfb 836: }
837:
838:
839: /*
1.13 jfb 840: * cvs_sendraw()
1.12 jfb 841: *
842: * Send the first <len> bytes from the buffer <src> to the server.
843: */
1.82 ! joris 844: void
1.13 jfb 845: cvs_sendraw(struct cvsroot *root, const void *src, size_t len)
1.12 jfb 846: {
1.18 jfb 847: FILE *out;
848:
849: if (cvs_cmdop == CVS_OP_SERVER)
850: out = stdout;
851: else
852: out = root->cr_srvin;
853:
1.12 jfb 854: if (cvs_server_inlog != NULL)
855: fwrite(src, sizeof(char), len, cvs_server_inlog);
1.82 ! joris 856: if (fwrite(src, sizeof(char), len, out) < len)
! 857: fatal("failed to send data");
1.12 jfb 858: }
859:
860:
861: /*
1.13 jfb 862: * cvs_recvraw()
1.12 jfb 863: *
864: * Receive the first <len> bytes from the buffer <src> to the server.
865: */
866: ssize_t
1.13 jfb 867: cvs_recvraw(struct cvsroot *root, void *dst, size_t len)
1.12 jfb 868: {
869: size_t ret;
1.18 jfb 870: FILE *in;
871:
872: if (cvs_cmdop == CVS_OP_SERVER)
873: in = stdin;
874: else
875: in = root->cr_srvout;
1.12 jfb 876:
1.18 jfb 877: ret = fread(dst, sizeof(char), len, in);
1.12 jfb 878: if (ret == 0)
879: return (-1);
880: if (cvs_server_outlog != NULL)
881: fwrite(dst, sizeof(char), len, cvs_server_outlog);
882: return (ssize_t)ret;
883: }
884:
885:
886: /*
1.13 jfb 887: * cvs_senddir()
1.12 jfb 888: *
1.32 jfb 889: * Send a `Directory' request along with the 2 paths that follow it. If
890: * the directory info to be sent is the same as the last info sent, the
891: * call does nothing and simply returns without an error.
1.12 jfb 892: */
1.82 ! joris 893: void
1.31 tedu 894: cvs_senddir(struct cvsroot *root, CVSFILE *dir)
1.12 jfb 895: {
1.60 xsa 896: size_t len;
1.28 jfb 897: char lbuf[MAXPATHLEN], rbuf[MAXPATHLEN];
1.12 jfb 898:
1.47 jfb 899: if (dir->cf_type != DT_DIR)
1.82 ! joris 900: fatal("cvs_senddir(): cf_type != DT_DIR: %d", dir->cf_type);
1.47 jfb 901:
1.32 jfb 902: cvs_file_getpath(dir, lbuf, sizeof(lbuf));
1.45 joris 903: if (strcmp(lbuf, cvs_lastdir) == 0 && cvs_cmdop != CVS_OP_CHECKOUT)
1.82 ! joris 904: return;
1.32 jfb 905:
1.82 ! joris 906: if (dir->cf_repo == NULL) {
! 907: len = strlcpy(rbuf, root->cr_dir, sizeof(rbuf));
! 908: if (len >= sizeof(rbuf))
! 909: fatal("cvs_senddir: path truncation");
! 910: } else {
1.60 xsa 911: len = cvs_path_cat(root->cr_dir, dir->cf_repo, rbuf,
912: sizeof(rbuf));
913: if (len >= sizeof(rbuf))
1.82 ! joris 914: fatal("cvs_senddir: path truncation");
1.51 xsa 915: }
1.12 jfb 916:
1.82 ! joris 917: cvs_sendreq(root, CVS_REQ_DIRECTORY, lbuf);
! 918: cvs_sendln(root, rbuf);
1.28 jfb 919:
1.82 ! joris 920: len = strlcpy(cvs_lastdir, lbuf, sizeof(cvs_lastdir));
! 921: if (len >= sizeof(lbuf))
! 922: fatal("path truncation in cvs_senddir");
1.12 jfb 923: }
924:
925:
926: /*
1.13 jfb 927: * cvs_sendarg()
1.12 jfb 928: *
929: * Send the argument <arg> to the server. The argument <append> is used to
930: * determine if the argument should be simply appended to the last argument
931: * sent or if it should be created as a new argument (0).
932: */
1.82 ! joris 933: void
1.13 jfb 934: cvs_sendarg(struct cvsroot *root, const char *arg, int append)
1.12 jfb 935: {
1.82 ! joris 936: cvs_sendreq(root, ((append == 0) ? CVS_REQ_ARGUMENT :
! 937: CVS_REQ_ARGUMENTX), arg);
1.12 jfb 938: }
939:
940:
941: /*
1.13 jfb 942: * cvs_sendentry()
1.12 jfb 943: *
944: * Send an `Entry' request to the server along with the mandatory fields from
945: * the CVS entry <ent> (which are the name and revision).
946: */
1.82 ! joris 947: void
1.47 jfb 948: cvs_sendentry(struct cvsroot *root, const CVSFILE *file)
1.12 jfb 949: {
1.51 xsa 950: int l;
1.77 xsa 951: char ebuf[CVS_ENT_MAXLINELEN], numbuf[64];
1.12 jfb 952:
1.82 ! joris 953: if (file->cf_type != DT_REG)
! 954: fatal("cvs_sendentry: cf_type != DT_REG: %d", file->cf_type);
1.48 joris 955:
956: /* don't send Entry for unknown files */
957: if (file->cf_cvstat == CVS_FST_UNKNOWN)
1.82 ! joris 958: return;
1.47 jfb 959:
1.51 xsa 960: l = snprintf(ebuf, sizeof(ebuf), "/%s/%s%s///", file->cf_name,
1.49 joris 961: (file->cf_cvstat == CVS_FST_REMOVED) ? "-" : "",
1.47 jfb 962: rcsnum_tostr(file->cf_lrev, numbuf, sizeof(numbuf)));
1.82 ! joris 963: if (l == -1 || l >= (int)sizeof(ebuf))
! 964: fatal("cvs_sendentry: overflow when creating entry buffer");
1.12 jfb 965:
1.82 ! joris 966: cvs_sendreq(root, CVS_REQ_ENTRY, ebuf);
1.12 jfb 967: }
968:
969:
970: /*
1.13 jfb 971: * cvs_initlog()
1.12 jfb 972: *
973: * Initialize protocol logging if the CVS_CLIENT_LOG environment variable is
974: * set. In this case, the variable's value is used as a path to which the
975: * appropriate suffix is added (".in" for server input and ".out" for server
976: * output.
977: * Returns 0 on success, or -1 on failure.
978: */
979: static int
1.13 jfb 980: cvs_initlog(void)
1.12 jfb 981: {
1.52 joris 982: int l;
983: u_int i;
984: char *env, *envdup, buf[MAXPATHLEN], fpath[MAXPATHLEN];
985: char rpath[MAXPATHLEN], *s;
986: struct stat st;
987: time_t now;
988: struct passwd *pwd;
1.12 jfb 989:
1.13 jfb 990: /* avoid doing it more than once */
991: if (cvs_server_logon)
992: return (0);
993:
1.12 jfb 994: env = getenv("CVS_CLIENT_LOG");
995: if (env == NULL)
996: return (0);
997:
1.80 joris 998: envdup = xstrdup(env);
1.52 joris 999: if ((s = strchr(envdup, '%')) != NULL)
1000: *s = '\0';
1001:
1002: strlcpy(buf, env, sizeof(buf));
1003: strlcpy(rpath, envdup, sizeof(rpath));
1.80 joris 1004: xfree(envdup);
1.52 joris 1005:
1006: s = buf;
1007: while ((s = strchr(s, '%')) != NULL) {
1008: *s++;
1009: switch (*s) {
1010: case 'c':
1011: strlcpy(fpath, cvs_command, sizeof(fpath));
1012: break;
1013: case 'd':
1014: time(&now);
1.59 niallo 1015: strlcpy(fpath, ctime(&now), sizeof(fpath));
1.52 joris 1016: break;
1017: case 'p':
1018: snprintf(fpath, sizeof(fpath), "%d", getpid());
1019: break;
1020: case 'u':
1021: if ((pwd = getpwuid(getuid())) != NULL)
1022: strlcpy(fpath, pwd->pw_name, sizeof(fpath));
1023: else
1024: fpath[0] = '\0';
1025: endpwent();
1026: break;
1027: default:
1028: fpath[0] = '\0';
1029: break;
1.58 joris 1030: }
1.52 joris 1031:
1032: if (fpath[0] != '\0') {
1033: strlcat(rpath, "-", sizeof(rpath));
1034: strlcat(rpath, fpath, sizeof(rpath));
1035: }
1036: }
1037:
1038: for (i = 0; i < UINT_MAX; i++) {
1039: l = snprintf(fpath, sizeof(fpath), "%s-%d.in", rpath, i);
1040: if (l == -1 || l >= (int)sizeof(fpath)) {
1041: errno = ENAMETOOLONG;
1042: cvs_log(LP_ERRNO, "%s", fpath);
1043: return (-1);
1044: }
1045:
1046: if (stat(fpath, &st) != -1)
1047: continue;
1048:
1049: if (errno != ENOENT)
1050: return (-1);
1051:
1052: break;
1053: }
1054:
1.12 jfb 1055: cvs_server_inlog = fopen(fpath, "w");
1056: if (cvs_server_inlog == NULL) {
1057: cvs_log(LP_ERRNO, "failed to open server input log `%s'",
1058: fpath);
1059: return (-1);
1060: }
1061:
1.52 joris 1062: for (i = 0; i < UINT_MAX; i++) {
1063: l = snprintf(fpath, sizeof(fpath), "%s-%d.out", rpath, i);
1064: if (l == -1 || l >= (int)sizeof(fpath)) {
1065: errno = ENAMETOOLONG;
1066: cvs_log(LP_ERRNO, "%s", fpath);
1067: return (-1);
1068: }
1069:
1070: if (stat(fpath, &st) != -1)
1071: continue;
1072:
1073: if (errno != ENOENT)
1074: return (-1);
1075:
1076: break;
1077: }
1078:
1.12 jfb 1079: cvs_server_outlog = fopen(fpath, "w");
1080: if (cvs_server_outlog == NULL) {
1081: cvs_log(LP_ERRNO, "failed to open server output log `%s'",
1082: fpath);
1083: return (-1);
1084: }
1085:
1086: /* make the streams line-buffered */
1.75 xsa 1087: setvbuf(cvs_server_inlog, NULL, _IOLBF, (size_t)0);
1088: setvbuf(cvs_server_outlog, NULL, _IOLBF, (size_t)0);
1.12 jfb 1089:
1.13 jfb 1090: cvs_server_logon = 1;
1.12 jfb 1091:
1092: return (0);
1093: }
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