X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fuci.git;a=blobdiff_plain;f=file.c;h=e9a8f90aad158213818339a1870c2c2fb181255f;hp=2ca7fce4580e7cdde690396fd6877cc77b28c7ba;hb=787fb6d4106cfd22485bd89d190be26e2a2c6178;hpb=8f5a6c07caaaf5bd692623d1ed8ffbfa20f564d8 diff --git a/file.c b/file.c index 2ca7fce..e9a8f90 100644 --- a/file.c +++ b/file.c @@ -19,6 +19,8 @@ #include #include #include +#include +#include #include #include @@ -274,6 +276,7 @@ static void assert_eol(struct uci_context *ctx, char **str) static void uci_switch_config(struct uci_context *ctx) { struct uci_parse_context *pctx; + struct uci_element *e; const char *name; pctx = ctx->pctx; @@ -295,7 +298,9 @@ static void uci_switch_config(struct uci_context *ctx) * ignore errors here, e.g. if the config was not found */ UCI_TRAP_SAVE(ctx, ignore); - uci_unload(ctx, name); + e = uci_lookup_list(ctx, &ctx->root, name); + if (e) + uci_unload(ctx, uci_to_package(e)); UCI_TRAP_RESTORE(ctx); ignore: ctx->errno = 0; @@ -306,7 +311,7 @@ ignore: /* * parse the 'package' uci command (next config package) */ -static void uci_parse_package(struct uci_context *ctx, char **str) +static void uci_parse_package(struct uci_context *ctx, char **str, bool single) { char *name = NULL; @@ -315,6 +320,9 @@ static void uci_parse_package(struct uci_context *ctx, char **str) name = next_arg(ctx, str, true); assert_eol(ctx, str); + if (single) + return; + ctx->pctx->name = name; uci_switch_config(ctx); } @@ -371,22 +379,22 @@ static void uci_parse_option(struct uci_context *ctx, char **str) /* * parse a complete input line, split up combined commands by ';' */ -static void uci_parse_line(struct uci_context *ctx) +static void uci_parse_line(struct uci_context *ctx, bool single) { struct uci_parse_context *pctx = ctx->pctx; - char *word, *brk; + char *word, *brk = NULL; for (word = strtok_r(pctx->buf, ";", &brk); word; word = strtok_r(NULL, ";", &brk)) { - char *pbrk; + char *pbrk = NULL; word = strtok_r(word, " \t", &pbrk); switch(word[0]) { case 'p': if ((word[1] == 0) || !strcmp(word + 1, "ackage")) - uci_parse_package(ctx, &word); + uci_parse_package(ctx, &word, single); break; case 'c': if ((word[1] == 0) || !strcmp(word + 1, "onfig")) @@ -406,14 +414,14 @@ static void uci_parse_line(struct uci_context *ctx) } /* max number of characters that escaping adds to the string */ -#define UCI_QUOTE_ESCAPE "'\\'" +#define UCI_QUOTE_ESCAPE "'\\''" /* * escape an uci string for export */ static char *uci_escape(struct uci_context *ctx, char *str) { - char *s, *p, *t; + char *s, *p; int pos = 0; if (!ctx->buf) { @@ -450,7 +458,7 @@ static char *uci_escape(struct uci_context *ctx, char *str) /* * export a single config package to a file stream */ -static void uci_export_package(struct uci_package *p, FILE *stream) +static void uci_export_package(struct uci_package *p, FILE *stream, bool header) { struct uci_context *ctx = p->ctx; struct uci_element *s, *o; @@ -469,7 +477,7 @@ static void uci_export_package(struct uci_package *p, FILE *stream) fprintf(stream, "\n"); } -int uci_export(struct uci_context *ctx, FILE *stream, struct uci_package *package) +int uci_export(struct uci_context *ctx, FILE *stream, struct uci_package *package, bool header) { struct uci_element *e; @@ -477,18 +485,18 @@ int uci_export(struct uci_context *ctx, FILE *stream, struct uci_package *packag UCI_ASSERT(ctx, stream != NULL); if (package) { - uci_export_package(package, stream); + uci_export_package(package, stream, header); goto done; } uci_foreach_element(&ctx->root, e) { - uci_export_package(uci_to_package(e), stream); + uci_export_package(uci_to_package(e), stream, header); } done: return 0; } -int uci_import(struct uci_context *ctx, FILE *stream, const char *name, struct uci_package **package) +int uci_import(struct uci_context *ctx, FILE *stream, const char *name, struct uci_package **package, bool single) { struct uci_parse_context *pctx; @@ -510,7 +518,7 @@ int uci_import(struct uci_context *ctx, FILE *stream, const char *name, struct u while (!feof(pctx->file)) { uci_getln(ctx, 0); if (pctx->buf[0]) - uci_parse_line(ctx); + uci_parse_line(ctx, single); } if (package) @@ -529,26 +537,28 @@ int uci_load(struct uci_context *ctx, const char *name, struct uci_package **pac { struct stat statbuf; char *filename; - bool confpath; + bool confdir; FILE *file; + int fd; UCI_HANDLE_ERR(ctx); UCI_ASSERT(ctx, name != NULL); -ignore: - ctx->errno = 0; - switch (name[0]) { case '.': + if (name[1] != '/') + UCI_THROW(ctx, UCI_ERR_NOTFOUND); + /* fall through */ case '/': /* absolute/relative path outside of /etc/config */ - filename = (char *) name; - confpath = false; + filename = uci_strdup(ctx, name); + name = strrchr(name, '/') + 1; + confdir = false; break; default: filename = uci_malloc(ctx, strlen(name) + sizeof(UCI_CONFDIR) + 2); sprintf(filename, UCI_CONFDIR "/%s", name); - confpath = true; + confdir = true; break; } @@ -557,13 +567,129 @@ ignore: UCI_THROW(ctx, UCI_ERR_NOTFOUND); } - file = fopen(filename, "r"); - if (filename != name) - free(filename); + fd = open(filename, O_RDONLY); + if (fd <= 0) + UCI_THROW(ctx, UCI_ERR_IO); + + if (flock(fd, LOCK_SH) < 0) + UCI_THROW(ctx, UCI_ERR_IO); + file = fdopen(fd, "r"); if (!file) UCI_THROW(ctx, UCI_ERR_IO); - return uci_import(ctx, file, name, package); + ctx->errno = 0; + UCI_TRAP_SAVE(ctx, done); + uci_import(ctx, file, name, package, true); + UCI_TRAP_RESTORE(ctx); + + if (*package) { + (*package)->path = filename; + (*package)->confdir = confdir; + } + +done: + flock(fd, LOCK_UN); + fclose(file); + return ctx->errno; +} + +int uci_commit(struct uci_context *ctx, struct uci_package *p) +{ + FILE *f = NULL; + int fd = 0; + int err = UCI_ERR_IO; + + UCI_HANDLE_ERR(ctx); + UCI_ASSERT(ctx, p != NULL); + UCI_ASSERT(ctx, p->path != NULL); + + fd = open(p->path, O_RDWR); + if (fd < 0) + goto done; + + if (flock(fd, LOCK_EX) < 0) + goto done; + + ftruncate(fd, 0); + f = fdopen(fd, "w"); + if (!f) + goto done; + + UCI_TRAP_SAVE(ctx, done); + uci_export(ctx, f, p, false); + UCI_TRAP_RESTORE(ctx); + +done: + if (f) + fclose(f); + else if (fd > 0) + close(fd); + + if (ctx->errno) + UCI_THROW(ctx, ctx->errno); + if (err) + UCI_THROW(ctx, UCI_ERR_IO); + return 0; +} + + +/* + * This function returns the filename by returning the string + * after the last '/' character. By checking for a non-'\0' + * character afterwards, directories are ignored (glob marks + * those with a trailing '/' + */ +static inline char *get_filename(char *path) +{ + char *p; + + p = strrchr(path, '/'); + p++; + if (!*p) + return NULL; + return p; } +char **uci_list_configs(struct uci_context *ctx) +{ + char **configs; + glob_t globbuf; + int size, i; + char *buf; + + if (glob(UCI_CONFDIR "/*", GLOB_MARK, NULL, &globbuf) != 0) + return NULL; + + size = sizeof(char *) * (globbuf.gl_pathc + 1); + for(i = 0; i < globbuf.gl_pathc; i++) { + char *p; + + p = get_filename(globbuf.gl_pathv[i]); + if (!p) + continue; + + size += strlen(p) + 1; + } + + configs = malloc(size); + if (!configs) + return NULL; + + memset(configs, 0, size); + buf = (char *) &configs[globbuf.gl_pathc + 1]; + for(i = 0; i < globbuf.gl_pathc; i++) { + char *p; + + p = get_filename(globbuf.gl_pathv[i]); + if (!p) + continue; + + configs[i] = buf; + strcpy(buf, p); + buf += strlen(buf) + 1; + } + return configs; +} + +