diff options
Diffstat (limited to 'batch.c')
| -rw-r--r-- | batch.c | 312 |
1 files changed, 312 insertions, 0 deletions
@@ -0,0 +1,312 @@ +/* + * Support for the batch-file options. + * + * Copyright (C) 1999 Weiss + * Copyright (C) 2004 Chris Shoemaker + * Copyright (C) 2004-2022 Wayne Davison + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, visit the http://fsf.org website. + */ + +#include "rsync.h" +#include <zlib.h> +#include <time.h> + +extern int eol_nulls; +extern int recurse; +extern int xfer_dirs; +extern int preserve_links; +extern int preserve_hard_links; +extern int preserve_devices; +extern int preserve_uid; +extern int preserve_gid; +extern int preserve_acls; +extern int preserve_xattrs; +extern int always_checksum; +extern int do_compression; +extern int inplace; +extern int append_mode; +extern int write_batch; +extern int protocol_version; +extern int raw_argc, cooked_argc; +extern char **raw_argv, **cooked_argv; +extern char *batch_name; +#ifdef ICONV_OPTION +extern char *iconv_opt; +#endif + +extern filter_rule_list filter_list; + +int batch_fd = -1; +int batch_sh_fd = -1; +int batch_stream_flags; + +static int tweaked_append; +static int tweaked_append_verify; +static int tweaked_iconv; + +static int *flag_ptr[] = { + &recurse, /* 0 */ + &preserve_uid, /* 1 */ + &preserve_gid, /* 2 */ + &preserve_links, /* 3 */ + &preserve_devices, /* 4 */ + &preserve_hard_links, /* 5 */ + &always_checksum, /* 6 */ + &xfer_dirs, /* 7 (protocol 29) */ + &do_compression, /* 8 (protocol 29) */ + &tweaked_iconv, /* 9 (protocol 30) */ + &preserve_acls, /* 10 (protocol 30) */ + &preserve_xattrs, /* 11 (protocol 30) */ + &inplace, /* 12 (protocol 30) */ + &tweaked_append, /* 13 (protocol 30) */ + &tweaked_append_verify, /* 14 (protocol 30) */ + NULL +}; + +static char *flag_name[] = { + "--recurse (-r)", + "--owner (-o)", + "--group (-g)", + "--links (-l)", + "--devices (-D)", + "--hard-links (-H)", + "--checksum (-c)", + "--dirs (-d)", + "--compress (-z)", + "--iconv", + "--acls (-A)", + "--xattrs (-X)", + "--inplace", + "--append", + "--append-verify", + NULL +}; + +void write_stream_flags(int fd) +{ + int i, flags; + + tweaked_append = append_mode == 1; + tweaked_append_verify = append_mode == 2; +#ifdef ICONV_OPTION + tweaked_iconv = iconv_opt != NULL; +#endif + + /* Start the batch file with a bitmap of data-stream-affecting + * flags. */ + for (i = 0, flags = 0; flag_ptr[i]; i++) { + if (*flag_ptr[i]) + flags |= 1 << i; + } + write_int(fd, flags); +} + +void read_stream_flags(int fd) +{ + batch_stream_flags = read_int(fd); +} + +void check_batch_flags(void) +{ + int i; + + if (protocol_version < 29) + flag_ptr[7] = NULL; + else if (protocol_version < 30) + flag_ptr[9] = NULL; + tweaked_append = append_mode == 1; + tweaked_append_verify = append_mode == 2; +#ifdef ICONV_OPTION + tweaked_iconv = iconv_opt != NULL; +#endif + for (i = 0; flag_ptr[i]; i++) { + int set = batch_stream_flags & (1 << i) ? 1 : 0; + if (*flag_ptr[i] != set) { + if (i == 9) { + rprintf(FERROR, + "%s specify the --iconv option to use this batch file.\n", + set ? "Please" : "Do not"); + exit_cleanup(RERR_SYNTAX); + } + if (INFO_GTE(MISC, 1)) { + rprintf(FINFO, + "%sing the %s option to match the batchfile.\n", + set ? "Sett" : "Clear", flag_name[i]); + } + *flag_ptr[i] = set; + } + } + if (protocol_version < 29) { + if (recurse) + xfer_dirs |= 1; + else if (xfer_dirs < 2) + xfer_dirs = 0; + } + + if (tweaked_append) + append_mode = 1; + else if (tweaked_append_verify) + append_mode = 2; +} + +static int write_arg(const char *arg) +{ + const char *x, *s; + int len, err = 0; + + if (*arg == '-' && (x = strchr(arg, '=')) != NULL) { + err |= write(batch_sh_fd, arg, x - arg + 1) != x - arg + 1; + arg += x - arg + 1; + } + + if (strpbrk(arg, " \"'&;|[]()$#!*?^\\") != NULL) { + err |= write(batch_sh_fd, "'", 1) != 1; + for (s = arg; (x = strchr(s, '\'')) != NULL; s = x + 1) { + err |= write(batch_sh_fd, s, x - s + 1) != x - s + 1; + err |= write(batch_sh_fd, "'", 1) != 1; + } + len = strlen(s); + err |= write(batch_sh_fd, s, len) != len; + err |= write(batch_sh_fd, "'", 1) != 1; + return err; + } + + len = strlen(arg); + err |= write(batch_sh_fd, arg, len) != len; + + return err; +} + +/* Writes out a space and then an option (or other string) with an optional "=" + arg suffix. */ +static int write_opt(const char *opt, const char *arg) +{ + int len = strlen(opt); + int err = write(batch_sh_fd, " ", 1) != 1; + err = write(batch_sh_fd, opt, len) != len ? 1 : 0; + if (arg) { + err |= write(batch_sh_fd, "=", 1) != 1; + err |= write_arg(arg); + } + return err; +} + +static void write_filter_rules(int fd) +{ + filter_rule *ent; + + write_sbuf(fd, " <<'#E#'\n"); + for (ent = filter_list.head; ent; ent = ent->next) { + unsigned int plen; + char *p = get_rule_prefix(ent, "- ", 0, &plen); + write_buf(fd, p, plen); + write_sbuf(fd, ent->pattern); + if (ent->rflags & FILTRULE_DIRECTORY) + write_byte(fd, '/'); + write_byte(fd, eol_nulls ? 0 : '\n'); + } + if (eol_nulls) + write_sbuf(fd, ";\n"); + write_sbuf(fd, "#E#"); +} + +/* This sets batch_fd and (for --write-batch) batch_sh_fd. */ +void open_batch_files(void) +{ + if (write_batch) { + char filename[MAXPATHLEN]; + + stringjoin(filename, sizeof filename, batch_name, ".sh", NULL); + + batch_sh_fd = do_open(filename, O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR | S_IXUSR); + if (batch_sh_fd < 0) { + rsyserr(FERROR, errno, "Batch file %s open error", full_fname(filename)); + exit_cleanup(RERR_FILESELECT); + } + + batch_fd = do_open(batch_name, O_WRONLY | O_CREAT | O_TRUNC, S_IRUSR | S_IWUSR); + } else if (strcmp(batch_name, "-") == 0) + batch_fd = STDIN_FILENO; + else + batch_fd = do_open(batch_name, O_RDONLY, S_IRUSR | S_IWUSR); + + if (batch_fd < 0) { + rsyserr(FERROR, errno, "Batch file %s open error", full_fname(batch_name)); + exit_cleanup(RERR_FILEIO); + } +} + +/* This routine tries to write out an equivalent --read-batch command + * given the user's --write-batch args. However, it doesn't really + * understand most of the options, so it uses some overly simple + * heuristics to munge the command line into something that will + * (hopefully) work. */ +void write_batch_shell_file(void) +{ + int i, j, len, err = 0; + char *p, *p2; + + /* Write argvs info to BATCH.sh file */ + err |= write_arg(raw_argv[0]); + if (filter_list.head) { + if (protocol_version >= 29) + err |= write_opt("--filter", "._-"); + else + err |= write_opt("--exclude-from", "-"); + } + + /* Elide the filename args from the option list, but scan for them in reverse. */ + for (i = raw_argc-1, j = cooked_argc-1; i > 0 && j >= 0; i--) { + if (strcmp(raw_argv[i], cooked_argv[j]) == 0) { + raw_argv[i] = NULL; + j--; + } + } + + for (i = 1; i < raw_argc; i++) { + if (!(p = raw_argv[i])) + continue; + if (strncmp(p, "--files-from", 12) == 0 + || strncmp(p, "--filter", 8) == 0 + || strncmp(p, "--include", 9) == 0 + || strncmp(p, "--exclude", 9) == 0) { + if (strchr(p, '=') == NULL) + i++; + continue; + } + if (strcmp(p, "-f") == 0) { + i++; + continue; + } + if (strncmp(p, "--write-batch", len = 13) == 0 + || strncmp(p, "--only-write-batch", len = 18) == 0) + err |= write_opt("--read-batch", p[len] == '=' ? p + len + 1 : NULL); + else { + err |= write(batch_sh_fd, " ", 1) != 1; + err |= write_arg(p); + } + } + if (!(p = check_for_hostspec(cooked_argv[cooked_argc - 1], &p2, &i))) + p = cooked_argv[cooked_argc - 1]; + err |= write_opt("${1:-", NULL); + err |= write_arg(p); + err |= write(batch_sh_fd, "}", 1) != 1; + if (filter_list.head) + write_filter_rules(batch_sh_fd); + if (write(batch_sh_fd, "\n", 1) != 1 || close(batch_sh_fd) < 0 || err) { + rsyserr(FERROR, errno, "Batch file %s.sh write error", batch_name); + exit_cleanup(RERR_FILEIO); + } + batch_sh_fd = -1; +} |