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Annotation of src/usr.bin/cvs/remote.c, Revision 1.24

1.24    ! joris       1: /*     $OpenBSD: remote.c,v 1.23 2008/06/12 07:16:14 joris Exp $       */
1.1       joris       2: /*
                      3:  * Copyright (c) 2006 Joris Vink <joris@openbsd.org>
                      4:  *
                      5:  * Permission to use, copy, modify, and distribute this software for any
                      6:  * purpose with or without fee is hereby granted, provided that the above
                      7:  * copyright notice and this permission notice appear in all copies.
                      8:  *
                      9:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
                     10:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
                     11:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
                     12:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                     13:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
                     14:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
                     15:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
                     16:  */
                     17:
1.14      otto       18: #include <sys/stat.h>
                     19:
                     20: #include <errno.h>
                     21: #include <fcntl.h>
                     22: #include <stdlib.h>
                     23: #include <string.h>
                     24: #include <unistd.h>
1.1       joris      25:
1.17      tobias     26: #include "atomicio.h"
1.1       joris      27: #include "cvs.h"
                     28: #include "remote.h"
                     29:
                     30: struct cvs_resp *
                     31: cvs_remote_get_response_info(const char *response)
                     32: {
                     33:        int i;
                     34:
                     35:        for (i = 0; cvs_responses[i].supported != -1; i++) {
                     36:                if (!strcmp(cvs_responses[i].name, response))
                     37:                        return (&(cvs_responses[i]));
                     38:        }
                     39:
                     40:        return (NULL);
                     41: }
                     42:
                     43: struct cvs_req *
                     44: cvs_remote_get_request_info(const char *request)
                     45: {
                     46:        int i;
                     47:
                     48:        for (i = 0; cvs_requests[i].supported != -1; i++) {
                     49:                if (!strcmp(cvs_requests[i].name, request))
                     50:                        return (&(cvs_requests[i]));
                     51:        }
                     52:
                     53:        return (NULL);
                     54: }
                     55:
                     56: void
                     57: cvs_remote_output(const char *data)
                     58: {
                     59:        FILE *out;
1.17      tobias     60:        size_t len;
1.16      tobias     61:        char nl = '\n';
1.1       joris      62:
                     63:        if (cvs_server_active)
                     64:                out = stdout;
                     65:        else
                     66:                out = current_cvsroot->cr_srvin;
                     67:
                     68:        fputs(data, out);
                     69:        fputs("\n", out);
1.16      tobias     70:
                     71:        if (cvs_server_active == 0 && cvs_client_inlog_fd != -1) {
1.17      tobias     72:                len = strlen(data);
                     73:                if (atomicio(vwrite, cvs_client_inlog_fd, data, len) != len ||
                     74:                    atomicio(vwrite, cvs_client_inlog_fd, &nl, 1) != 1)
                     75:                        fatal("failed to write to log file");
1.16      tobias     76:        }
1.1       joris      77: }
                     78:
                     79: char *
                     80: cvs_remote_input(void)
                     81: {
                     82:        FILE *in;
                     83:        size_t len;
1.16      tobias     84:        char nl = '\n';
1.1       joris      85:        char *data, *ldata;
                     86:
                     87:        if (cvs_server_active)
                     88:                in = stdin;
                     89:        else
                     90:                in = current_cvsroot->cr_srvout;
                     91:
                     92:        data = fgetln(in, &len);
                     93:        if (data == NULL) {
                     94:                if (sig_received != 0)
                     95:                        fatal("received signal %d", sig_received);
                     96:
                     97:                if (cvs_server_active) {
                     98:                        cvs_cleanup();
                     99:                        exit(0);
                    100:                }
                    101:
                    102:                fatal("the connection has been closed by the server");
                    103:        }
                    104:
                    105:        if (data[len - 1] == '\n') {
                    106:                data[len - 1] = '\0';
1.9       otto      107:                ldata = xstrdup(data);
1.1       joris     108:        } else {
                    109:                ldata = xmalloc(len + 1);
1.9       otto      110:                memcpy(ldata, data, len);
                    111:                ldata[len] = '\0';
1.1       joris     112:        }
1.5       joris     113:
                    114:        if (cvs_server_active == 0 && cvs_client_outlog_fd != -1) {
1.17      tobias    115:                len = strlen(data);
                    116:                if (atomicio(vwrite, cvs_client_outlog_fd, data, len) != len ||
                    117:                    atomicio(vwrite, cvs_client_outlog_fd, &nl, 1) != 1)
                    118:                        fatal("failed to write to log file");
1.5       joris     119:        }
                    120:
1.1       joris     121:        return (ldata);
                    122: }
                    123:
1.6       joris     124: void
                    125: cvs_remote_receive_file(int fd, size_t len)
1.1       joris     126: {
                    127:        FILE *in;
1.10      otto      128:        char data[MAXBSIZE];
1.17      tobias    129:        size_t nread, nleft, toread;
1.1       joris     130:
                    131:        if (cvs_server_active)
                    132:                in = stdin;
                    133:        else
                    134:                in = current_cvsroot->cr_srvout;
                    135:
1.6       joris     136:        nleft = len;
                    137:
                    138:        while (nleft > 0) {
                    139:                toread = MIN(nleft, MAXBSIZE);
                    140:
                    141:                nread = fread(data, sizeof(char), toread, in);
                    142:                if (nread == 0)
                    143:                        fatal("error receiving file");
1.4       joris     144:
1.17      tobias    145:                if (atomicio(vwrite, fd, data, nread) != nread)
1.8       otto      146:                        fatal("failed to write %zu bytes", nread);
1.6       joris     147:
1.17      tobias    148:                if (cvs_server_active == 0 && cvs_client_outlog_fd != -1 &&
                    149:                    atomicio(vwrite, cvs_client_outlog_fd, data, nread)
                    150:                    != nread)
                    151:                        fatal("failed to write to log file");
1.1       joris     152:
1.6       joris     153:                nleft -= nread;
1.5       joris     154:        }
1.1       joris     155: }
                    156:
                    157: void
1.21      joris     158: cvs_remote_send_file(const char *path, int _fd)
1.1       joris     159: {
1.13      xsa       160:        int fd;
1.6       joris     161:        FILE *out, *in;
1.8       otto      162:        size_t ret, rw;
                    163:        off_t total;
1.1       joris     164:        struct stat st;
1.11      otto      165:        char buf[18], data[MAXBSIZE];
1.1       joris     166:
                    167:        if (cvs_server_active)
                    168:                out = stdout;
                    169:        else
                    170:                out = current_cvsroot->cr_srvin;
                    171:
1.21      joris     172:        fd = dup(_fd);
                    173:        if (fd == -1)
                    174:                fatal("cvs_remote_send_file: dup: %s", strerror(errno));
                    175:
1.22      joris     176:        if (lseek(fd, 0, SEEK_SET) < 0)
1.21      joris     177:                fatal("cvs_remote_send_file: %s: lseek: %s", path,
                    178:                    strerror(errno));
1.1       joris     179:
                    180:        if (fstat(fd, &st) == -1)
1.21      joris     181:                fatal("cvs_remote_send_file: %s: fstat: %s", path,
                    182:                    strerror(errno));
1.1       joris     183:
                    184:        cvs_modetostr(st.st_mode, buf, sizeof(buf));
                    185:        cvs_remote_output(buf);
                    186:
1.13      xsa       187:        (void)xsnprintf(buf, sizeof(buf), "%lld", st.st_size);
1.1       joris     188:        cvs_remote_output(buf);
                    189:
1.6       joris     190:        if ((in = fdopen(fd, "r")) == NULL)
                    191:                fatal("cvs_remote_send_file: fdopen %s", strerror(errno));
                    192:
                    193:        total = 0;
                    194:        while ((ret = fread(data, sizeof(char), MAXBSIZE, in)) != 0) {
                    195:                rw = fwrite(data, sizeof(char), ret, out);
                    196:                if (rw != ret)
1.8       otto      197:                        fatal("failed to write %zu bytes", ret);
1.5       joris     198:
1.17      tobias    199:                if (cvs_server_active == 0 && cvs_client_inlog_fd != -1 &&
                    200:                    atomicio(vwrite, cvs_client_inlog_fd, data, ret) != ret)
                    201:                        fatal("failed to write to log file");
1.6       joris     202:
                    203:                total += ret;
1.5       joris     204:        }
1.1       joris     205:
1.6       joris     206:        if (total != st.st_size)
1.8       otto      207:                fatal("length mismatch, %lld vs %lld", total, st.st_size);
1.4       joris     208:
1.6       joris     209:        (void)fclose(in);
1.23      joris     210: }
                    211:
                    212: void
                    213: cvs_remote_send_file_buf(char *file, BUF *bp, mode_t mode)
                    214: {
                    215:        char buf[18];
                    216:        u_char *data;
                    217:        size_t len, ret;
                    218:
                    219:        if (cvs_server_active != 1)
                    220:                fatal("cvs_remote_send_file_buf is server only");
                    221:
                    222:        len = cvs_buf_len(bp);
                    223:        data = cvs_buf_release(bp);
                    224:
                    225:        cvs_modetostr(mode, buf, sizeof(buf));
                    226:        cvs_remote_output(buf);
                    227:
                    228:        (void)xsnprintf(buf, sizeof(buf), "%ld", len);
                    229:        cvs_remote_output(buf);
                    230:
                    231:        ret = fwrite(data, sizeof(char), len, stdout);
                    232:        if (ret != len)
                    233:                cvs_log(LP_ERR, "warning: sent %s truncated", file);
                    234:
                    235:        if (cvs_server_active == 0 && cvs_client_inlog_fd != -1 &&
                    236:            atomicio(vwrite, cvs_client_inlog_fd, data, len) != len)
                    237:                fatal("failed to write to log file");
                    238:
                    239:        xfree(data);
1.1       joris     240: }
                    241:
                    242: void
                    243: cvs_remote_classify_file(struct cvs_file *cf)
                    244: {
                    245:        struct stat st;
                    246:        CVSENTRIES *entlist;
                    247:
                    248:        entlist = cvs_ent_open(cf->file_wd);
                    249:        cf->file_ent = cvs_ent_get(entlist, cf->file_name);
                    250:
                    251:        if (cf->file_ent != NULL && cf->file_ent->ce_status != CVS_ENT_REG) {
                    252:                if (cf->file_ent->ce_status == CVS_ENT_ADDED)
                    253:                        cf->file_status = FILE_ADDED;
                    254:                else
                    255:                        cf->file_status = FILE_REMOVED;
                    256:                return;
1.2       joris     257:        }
                    258:
                    259:        if (cf->file_ent != NULL) {
                    260:                if (cf->file_ent->ce_type == CVS_ENT_DIR)
                    261:                        cf->file_type = CVS_DIR;
                    262:                else
                    263:                        cf->file_type = CVS_FILE;
1.1       joris     264:        }
                    265:
                    266:        if (cf->fd != -1 && cf->file_ent != NULL) {
                    267:                if (fstat(cf->fd, &st) == -1)
                    268:                        fatal("cvs_remote_classify_file(%s): %s", cf->file_path,
                    269:                            strerror(errno));
                    270:
1.12      joris     271:                if (st.st_mtime != cf->file_ent->ce_mtime)
1.1       joris     272:                        cf->file_status = FILE_MODIFIED;
                    273:                else
                    274:                        cf->file_status = FILE_UPTODATE;
                    275:        } else if (cf->fd == -1) {
                    276:                cf->file_status = FILE_UNKNOWN;
                    277:        }
1.7       joris     278:
                    279:        if (cvs_cmdop == CVS_OP_IMPORT && cf->file_type == CVS_FILE)
                    280:                cf->file_status = FILE_MODIFIED;
1.1       joris     281: }
                    282:
1.18      joris     283:
                    284: void
                    285: cvs_validate_directory(const char *path)
                    286: {
                    287:        char *dir, *sp, *dp;
                    288:
1.20      joris     289:        dir = xstrdup(path);
1.18      joris     290:
                    291:        for (sp = dir; sp != NULL; sp = dp) {
                    292:                dp = strchr(sp, '/');
                    293:                if (dp != NULL)
                    294:                        *(dp++) = '\0';
                    295:
                    296:                if (!strcmp(sp, ".."))
                    297:                        fatal("path validation failed!");
                    298:        }
                    299:
                    300:        xfree(dir);
                    301: }