X-Git-Url: http://git.archive.openwrt.org/?p=project%2Fuci.git;a=blobdiff_plain;f=file.c;h=7e1e4e6f0ddcdbb545c4e83efda52fb33031374a;hp=1d2718ace8397fe636e6574a046b0befacc01bcc;hb=ec96e1f93d6d0faa3f3c40f6bcbc0006550281a8;hpb=61657246a9145e7f9e8780f69e0e198231345deb

diff --git a/file.c b/file.c
index 1d2718a..7e1e4e6 100644
--- a/file.c
+++ b/file.c
@@ -33,7 +33,6 @@
 #include "uci_internal.h"
 
 #define LINEBUF	32
-#define LINEBUF_MAX	4096
 
 /*
  * Fetch a new line from the input stream and resize buffer if necessary
@@ -48,8 +47,8 @@ __private void uci_getln(struct uci_context *ctx, int offset)
 		pctx->buf = uci_malloc(ctx, LINEBUF);
 		pctx->bufsz = LINEBUF;
 	}
-	/* `offset' may off by one */
-	if (offset >= pctx->bufsz) {
+	/* It takes 2 slots for fgets to read 1 char. */
+	if (offset >= pctx->bufsz - 1) {
 		pctx->bufsz *= 2;
 		pctx->buf = uci_realloc(ctx, pctx->buf, pctx->bufsz);
 	}
@@ -69,11 +68,10 @@ __private void uci_getln(struct uci_context *ctx, int offset)
 			return;
 		}
 
-		if (pctx->bufsz > LINEBUF_MAX/2)
-			uci_parse_error(ctx, "line too long");
-
 		pctx->bufsz *= 2;
 		pctx->buf = uci_realloc(ctx, pctx->buf, pctx->bufsz);
+		if (!pctx->buf)
+			UCI_THROW(ctx, UCI_ERR_MEM);
 	} while (1);
 }
 
@@ -157,7 +155,6 @@ static void parse_double_quote(struct uci_context *ctx, int *target)
 			break;
 		}
 	}
-	uci_parse_error(ctx, "unterminated \"");
 }
 
 /*
@@ -180,14 +177,13 @@ static void parse_single_quote(struct uci_context *ctx, int *target)
 			/* Multi-line str value */
 			uci_getln(ctx, pctx->pos);
 			if (!pctx_cur_char(pctx))
-				uci_parse_error(ctx, "EOF with unterminated \"");
+				uci_parse_error(ctx, "EOF with unterminated '");
 
 			break;
 		default:
 			addc(ctx, target, &pctx->pos);
 		}
 	}
-	uci_parse_error(ctx, "unterminated '");
 }
 
 /*
@@ -239,7 +235,7 @@ done:
 /*
  * extract the next argument from the command line
  */
-static int next_arg(struct uci_context *ctx, bool required, bool name)
+static int next_arg(struct uci_context *ctx, bool required, bool name, bool package)
 {
 	struct uci_parse_context *pctx = ctx->pctx;
 	int val, ptr;
@@ -258,7 +254,7 @@ static int next_arg(struct uci_context *ctx, bool required, bool name)
 		goto done;
 	}
 
-	if (name && !uci_validate_name(pctx_str(pctx, val)))
+	if (name && !uci_validate_str(pctx_str(pctx, val), name, package))
 		uci_parse_error(ctx, "invalid character in name field");
 
 done:
@@ -280,16 +276,12 @@ int uci_parse_argument(struct uci_context *ctx, FILE *stream, char **str, char *
 		uci_alloc_parse_context(ctx);
 
 	ctx->pctx->file = stream;
-
 	if (!*str) {
+		ctx->pctx->pos = 0;
 		uci_getln(ctx, 0);
-		*str = ctx->pctx->buf;
-	} else {
-		UCI_ASSERT(ctx, ctx->pctx->pos == *str - ctx->pctx->buf);
 	}
 
-	/*FIXME do we need to skip empty lines? */
-	ofs_result = next_arg(ctx, false, false);
+	ofs_result = next_arg(ctx, false, false, false);
 	*result = pctx_str(ctx->pctx, ofs_result);
 	*str = pctx_cur_str(ctx->pctx);
 
@@ -343,7 +335,7 @@ static void assert_eol(struct uci_context *ctx)
 	int ofs_tmp;
 
 	skip_whitespace(ctx);
-	ofs_tmp = next_arg(ctx, false, false);
+	ofs_tmp = next_arg(ctx, false, false, false);
 	tmp = pctx_str(ctx->pctx, ofs_tmp);
 	if (*tmp && (ctx->flags & UCI_FLAG_STRICT))
 		uci_parse_error(ctx, "too many arguments");
@@ -396,7 +388,7 @@ static void uci_parse_package(struct uci_context *ctx, bool single)
 	/* command string null-terminated by strtok */
 	pctx->pos += strlen(pctx_cur_str(pctx)) + 1;
 
-	ofs_name = next_arg(ctx, true, true);
+	ofs_name = next_arg(ctx, true, true, true);
 	name = pctx_str(pctx, ofs_name);
 	assert_eol(ctx);
 	if (single)
@@ -429,12 +421,12 @@ static void uci_parse_config(struct uci_context *ctx)
 	/* command string null-terminated by strtok */
 	pctx->pos += strlen(pctx_cur_str(pctx)) + 1;
 
-	ofs_type = next_arg(ctx, true, false);
+	ofs_type = next_arg(ctx, true, false, false);
 	type = pctx_str(pctx, ofs_type);
 	if (!uci_validate_type(type))
 		uci_parse_error(ctx, "invalid character in type field");
 
-	ofs_name = next_arg(ctx, false, true);
+	ofs_name = next_arg(ctx, false, true, false);
 	type = pctx_str(pctx, ofs_type);
 	name = pctx_str(pctx, ofs_name);
 	assert_eol(ctx);
@@ -445,8 +437,13 @@ static void uci_parse_config(struct uci_context *ctx)
 	} else {
 		uci_fill_ptr(ctx, &ptr, &pctx->package->e);
 		e = uci_lookup_list(&pctx->package->sections, name);
-		if (e)
+		if (e) {
 			ptr.s = uci_to_section(e);
+
+			if ((ctx->flags & UCI_FLAG_STRICT) && strcmp(ptr.s->type, type))
+				uci_parse_error(ctx, "section of different type overwrites prior section with same name");
+		}
+
 		ptr.section = name;
 		ptr.value = type;
 
@@ -474,8 +471,8 @@ static void uci_parse_option(struct uci_context *ctx, bool list)
 	/* command string null-terminated by strtok */
 	pctx->pos += strlen(pctx_cur_str(pctx)) + 1;
 
-	ofs_name = next_arg(ctx, true, true);
-	ofs_value = next_arg(ctx, false, false);
+	ofs_name = next_arg(ctx, true, true, false);
+	ofs_value = next_arg(ctx, false, false, false);
 	name = pctx_str(pctx, ofs_name);
 	value = pctx_str(pctx, ofs_value);
 	assert_eol(ctx);
@@ -743,17 +740,6 @@ static void uci_file_commit(struct uci_context *ctx, struct uci_package **packag
 	if ((asprintf(&filename, "%s/.%s.uci-XXXXXX", ctx->confdir, p->e.name) < 0) || !filename)
 		UCI_THROW(ctx, UCI_ERR_MEM);
 
-	if (!mktemp(filename))
-		*filename = 0;
-
-	if (!*filename) {
-		free(filename);
-		UCI_THROW(ctx, UCI_ERR_IO);
-	}
-
-	if ((stat(filename, &statbuf) == 0) && ((statbuf.st_mode & S_IFMT) != S_IFREG))
-		UCI_THROW(ctx, UCI_ERR_IO);
-
 	/* open the config file for writing now, so that it is locked */
 	f1 = uci_open_stream(ctx, p->path, NULL, SEEK_SET, true, true);
 
@@ -788,6 +774,17 @@ static void uci_file_commit(struct uci_context *ctx, struct uci_package **packag
 			goto done;
 	}
 
+	if (!mktemp(filename))
+		*filename = 0;
+
+	if (!*filename) {
+		free(filename);
+		UCI_THROW(ctx, UCI_ERR_IO);
+	}
+
+	if ((stat(filename, &statbuf) == 0) && ((statbuf.st_mode & S_IFMT) != S_IFREG))
+		UCI_THROW(ctx, UCI_ERR_IO);
+
 	f2 = uci_open_stream(ctx, filename, p->path, SEEK_SET, true, true);
 	uci_export(ctx, f2, p, false);
 
@@ -803,12 +800,15 @@ done:
 	free(name);
 	free(path);
 	uci_close_stream(f1);
-	if (do_rename && rename(filename, p->path)) {
-		unlink(filename);
-		UCI_THROW(ctx, UCI_ERR_IO);
+	if (do_rename) {
+		path = realpath(p->path, NULL);
+		if (!path || rename(filename, path)) {
+			unlink(filename);
+			UCI_THROW(ctx, UCI_ERR_IO);
+		}
+		free(path);
 	}
 	free(filename);
-	sync();
 	if (ctx->err)
 		UCI_THROW(ctx, ctx->err);
 }