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-rw-r--r--src/main.c24
-rw-r--r--src/opk.c19
-rw-r--r--src/ustar.c48
-rw-r--r--src/ustar.h41
4 files changed, 80 insertions, 52 deletions
diff --git a/src/main.c b/src/main.c
index c3cea7c..7b18541 100644
--- a/src/main.c
+++ b/src/main.c
@@ -25,19 +25,16 @@
int
main(int argc, char *argv[])
{
- struct opkg_opk_ustar_seek_name *control_files_head;
- struct opkg_opk_ustar_seek_name *control_files_tail;
+ struct opkg_opk_ustar_seek_name *control_files;
struct opkg_opk_opk *opk;
- control_files_head = control_files_tail = NULL;
- if (opkg_opk_ustar_add_seek_name(
- &control_files_head, &control_files_tail,
- "control") != OPKG_OPK_OK) {
+ control_files = NULL;
+ if (opkg_opk_ustar_add_seek_name(&control_files, "control") !=
+ OPKG_OPK_OK) {
goto error0;
}
- if (opkg_opk_ustar_add_seek_name(
- &control_files_head, &control_files_tail,
- "md5sums") != OPKG_OPK_OK) {
+ if (opkg_opk_ustar_add_seek_name(&control_files, "md5sums") !=
+ OPKG_OPK_OK) {
goto error0;
}
@@ -51,7 +48,7 @@ main(int argc, char *argv[])
if (opkg_opk_opk_init_inner(opk, "control.tar.gz") != OPKG_OPK_OK) {
goto error1;
}
- if (opkg_opk_opk_read_control(opk, control_files_head) != OPKG_OPK_OK) {
+ if (opkg_opk_opk_read_control(opk, control_files) != OPKG_OPK_OK) {
goto error2;
}
opkg_opk_opk_free_inner(opk);
@@ -66,6 +63,7 @@ main(int argc, char *argv[])
opkg_opk_opk_free_inner(opk);
opkg_opk_opk_free_outer(opk);
+ opkg_opk_ustar_free_seek_names(control_files);
return EXIT_SUCCESS;
error2:
@@ -73,10 +71,6 @@ main(int argc, char *argv[])
error1:
opkg_opk_opk_free_outer(opk);
error0:
- while (control_files_head != NULL) {
- control_files_tail = control_files_head;
- control_files_head = control_files_head->next;
- free(control_files_tail);
- }
+ opkg_opk_ustar_free_seek_names(control_files);
return EXIT_FAILURE;
}
diff --git a/src/opk.c b/src/opk.c
index cdb3f58..45da6fd 100644
--- a/src/opk.c
+++ b/src/opk.c
@@ -59,8 +59,7 @@ _opkg_opk_opk_file_read(void *user_data, char **buffer, size_t *size)
struct opkg_opk_opk *
opkg_opk_opk_init_outer(const char *file_name)
{
- struct opkg_opk_opk *opk;
- struct opkg_opk_ustar_seek_name seek_name;
+ struct opkg_opk_opk *opk;
opk = malloc(sizeof(*opk));
if (opk == NULL) {
@@ -90,11 +89,8 @@ opkg_opk_opk_init_outer(const char *file_name)
}
/* Check package version. */
- seek_name.name = "debian-binary";
- seek_name.found = 0;
- seek_name.next = NULL;
- if (opkg_opk_ustar_seek(opk->outer_ustar, &seek_name) == OPKG_OPK_ERROR)
- {
+ if (opkg_opk_ustar_seek_one(opk->outer_ustar, "debian-binary") !=
+ OPKG_OPK_OK) {
fputs("Error: Failed to find \"debian-binary\" in archive\n",
stderr);
goto error3;
@@ -129,8 +125,7 @@ opkg_opk_opk_init_outer(const char *file_name)
int
opkg_opk_opk_init_inner(struct opkg_opk_opk *opk, const char *member)
{
- int ret;
- struct opkg_opk_ustar_seek_name seek_name;
+ int ret;
/* Finish reading previous inner archive, if any. */
while ((ret = opkg_opk_ustar_read(opk->outer_ustar, NULL, NULL)) ==
@@ -141,11 +136,7 @@ opkg_opk_opk_init_inner(struct opkg_opk_opk *opk, const char *member)
}
/* Find requested inner archive. */
- seek_name.name = member;
- seek_name.found = 0;
- seek_name.next = NULL;
- if (opkg_opk_ustar_seek(opk->outer_ustar, &seek_name) == OPKG_OPK_ERROR)
- {
+ if (opkg_opk_ustar_seek_one(opk->outer_ustar, member) != OPKG_OPK_OK) {
fprintf(stderr, "Error: Failed to find \"%s\" in archive\n",
member);
return OPKG_OPK_ERROR;
diff --git a/src/ustar.c b/src/ustar.c
index 9d95052..47e0dfa 100644
--- a/src/ustar.c
+++ b/src/ustar.c
@@ -53,6 +53,12 @@ struct opkg_opk_ustar {
char read_record[OPKG_OPK_USTAR_RECORD_SIZE];
};
+struct opkg_opk_ustar_seek_name {
+ const char *name;
+ int found;
+ struct opkg_opk_ustar_seek_name *next;
+};
+
struct opkg_opk_ustar *
opkg_opk_ustar_init(struct opkg_opk_gzip *gzip)
{
@@ -226,8 +232,8 @@ opkg_opk_ustar_list(struct opkg_opk_ustar *ustar,
}
int
-opkg_opk_ustar_add_seek_name(struct opkg_opk_ustar_seek_name **head,
- struct opkg_opk_ustar_seek_name **tail, const char *name)
+opkg_opk_ustar_add_seek_name(struct opkg_opk_ustar_seek_name **names,
+ const char *name)
{
struct opkg_opk_ustar_seek_name *seek_name;
@@ -237,18 +243,24 @@ opkg_opk_ustar_add_seek_name(struct opkg_opk_ustar_seek_name **head,
}
seek_name->name = name;
seek_name->found = 0;
- seek_name->next = NULL;
-
- if (*head == NULL) {
- *head = seek_name;
- } else {
- (*tail)->next = seek_name;
- }
- *tail = seek_name;
+ seek_name->next = *names;
+ *names = seek_name;
return OPKG_OPK_OK;
}
+void
+opkg_opk_ustar_free_seek_names(struct opkg_opk_ustar_seek_name *names)
+{
+ struct opkg_opk_ustar_seek_name *name;
+
+ while (names != NULL) {
+ name = names;
+ names = names->next;
+ free(name);
+ }
+}
+
int
opkg_opk_ustar_seek(struct opkg_opk_ustar *ustar,
struct opkg_opk_ustar_seek_name *names)
@@ -321,6 +333,22 @@ opkg_opk_ustar_seek(struct opkg_opk_ustar *ustar,
}
int
+opkg_opk_ustar_seek_one(struct opkg_opk_ustar *ustar, const char *name)
+{
+ struct opkg_opk_ustar_seek_name seek_name;
+
+ seek_name.name = name;
+ seek_name.found = 0;
+ seek_name.next = NULL;
+
+ if (opkg_opk_ustar_seek(ustar, &seek_name) == OPKG_OPK_END) {
+ return OPKG_OPK_OK;
+ } else {
+ return OPKG_OPK_ERROR;
+ }
+}
+
+int
opkg_opk_ustar_read(struct opkg_opk_ustar *ustar, char **buffer, size_t *size)
{
if (ustar->data_size_remaining == 0) {
diff --git a/src/ustar.h b/src/ustar.h
index a5bb461..3495d38 100644
--- a/src/ustar.h
+++ b/src/ustar.h
@@ -41,11 +41,7 @@ struct opkg_opk_ustar_member {
struct opkg_opk_ustar_member *next;
};
-struct opkg_opk_ustar_seek_name {
- const char *name;
- int found;
- struct opkg_opk_ustar_seek_name *next;
-};
+struct opkg_opk_ustar_seek_name;
/*
* Allocates and initializes an archive structure.
@@ -76,26 +72,32 @@ opkg_opk_ustar_list(struct opkg_opk_ustar *ustar,
/*
* Adds a name to a list of names to find with opkg_opk_ustar_seek(). List is
- * dynamically allocated; free with free().
+ * dynamically allocated; free with opkg_opk_ustar_free_seek_names().
* Parameters:
- * - head: Address in which to store address of list head.
- * - tail: Address in which to store address of list tail.
- * - name: Name of member file to find.
+ * - names: Address in which to store address of list.
+ * - name: Name of member file to find.
* Returns:
* - OPKG_OPK_OK if the name was added to the list.
* - OPKG_OPK_ERROR on memory exhaustion.
*/
int
-opkg_opk_ustar_add_seek_name(struct opkg_opk_ustar_seek_name **head,
- struct opkg_opk_ustar_seek_name **tail, const char *name);
+opkg_opk_ustar_add_seek_name(struct opkg_opk_ustar_seek_name **names,
+ const char *name);
+
+/*
+ * Frees a list of names to find with opkg_opk_ustar_seek().
+ * Parameters:
+ * - names: List of names.
+ */
+void
+opkg_opk_ustar_free_seek_names(struct opkg_opk_ustar_seek_name *names);
/*
* Advances to a named member file. May be called multiple times until all
* requested members are found.
* Parameters:
* - ustar: Archive structure.
- * - names: Name(s) to find. Member "found" will be set to "1" on the first
- * name found.
+ * - names: Name(s) to find.
* Returns:
* - OPKG_OPK_OK if a member matching one of the requested names is found but
* more names remain to be found.
@@ -109,6 +111,19 @@ opkg_opk_ustar_seek(struct opkg_opk_ustar *ustar,
struct opkg_opk_ustar_seek_name *names);
/*
+ * Advances to a named member file.
+ * Parameters:
+ * - ustar: Archive structure.
+ * - name: Name to find.
+ * Returns:
+ * - OPKG_OPK_OK if a member matching the requested name is found.
+ * - OPKG_OPK_ERROR if no matching member is found or on decompression error, an
+ * invalid header, or unsupported file type.
+ */
+int
+opkg_opk_ustar_seek_one(struct opkg_opk_ustar *ustar, const char *name);
+
+/*
* Reads up to a record (512 octets) of member file data at a time.
* Parameters:
* - ustar: Archive structure.
generated by cgit v0.9.1 at 2024-07-04 13:34:23 (EDT)