#include "obj_pool.h"
#include "string_pool.h"
+/*
+ * Compare start of string to literal of equal length;
+ * must be guarded by length test.
+ */
+#define constcmp(s, ref) memcmp(s, ref, sizeof(ref) - 1)
+
#define NODEACT_REPLACE 4
#define NODEACT_DELETE 3
#define NODEACT_ADD 2
/* Create memory pool for log messages */
obj_pool_gen(log, char, 4096)
-static char* log_copy(uint32_t length, char *log)
+static struct line_buffer input = LINE_BUFFER_INIT;
+
+static char *log_copy(uint32_t length, const char *log)
{
char *buffer;
log_free(log_pool.size);
uint32_t version, uuid, url;
} dump_ctx;
-static struct {
- uint32_t svn_log, svn_author, svn_date, svn_executable, svn_special, uuid,
- revision_number, node_path, node_kind, node_action,
- node_copyfrom_path, node_copyfrom_rev, text_content_length,
- prop_content_length, content_length, svn_fs_dump_format_version,
- /* version 3 format */
- text_delta, prop_delta;
-} keys;
-
static void reset_node_ctx(char *fname)
{
node_ctx.type = 0;
dump_ctx.uuid = ~0;
}
-static void init_keys(void)
+static void handle_property(const struct strbuf *key_buf,
+ const char *val, uint32_t len,
+ uint32_t *type_set)
+{
+ const char *key = key_buf->buf;
+ size_t keylen = key_buf->len;
+
+ switch (keylen + 1) {
+ case sizeof("svn:log"):
+ if (constcmp(key, "svn:log"))
+ break;
+ if (!val)
+ die("invalid dump: unsets svn:log");
+ /* Value length excludes terminating nul. */
+ rev_ctx.log = log_copy(len + 1, val);
+ break;
+ case sizeof("svn:author"):
+ if (constcmp(key, "svn:author"))
+ break;
+ rev_ctx.author = pool_intern(val);
+ break;
+ case sizeof("svn:date"):
+ if (constcmp(key, "svn:date"))
+ break;
+ if (!val)
+ die("invalid dump: unsets svn:date");
+ if (parse_date_basic(val, &rev_ctx.timestamp, NULL))
+ warning("invalid timestamp: %s", val);
+ break;
+ case sizeof("svn:executable"):
+ case sizeof("svn:special"):
+ if (keylen == strlen("svn:executable") &&
+ constcmp(key, "svn:executable"))
+ break;
+ if (keylen == strlen("svn:special") &&
+ constcmp(key, "svn:special"))
+ break;
+ if (*type_set) {
+ if (!val)
+ return;
+ die("invalid dump: sets type twice");
+ }
+ if (!val) {
+ node_ctx.type = REPO_MODE_BLB;
+ return;
+ }
+ *type_set = 1;
+ node_ctx.type = keylen == strlen("svn:executable") ?
+ REPO_MODE_EXE :
+ REPO_MODE_LNK;
+ }
+}
+
+static void die_short_read(void)
{
- keys.svn_log = pool_intern("svn:log");
- keys.svn_author = pool_intern("svn:author");
- keys.svn_date = pool_intern("svn:date");
- keys.svn_executable = pool_intern("svn:executable");
- keys.svn_special = pool_intern("svn:special");
- keys.uuid = pool_intern("UUID");
- keys.revision_number = pool_intern("Revision-number");
- keys.node_path = pool_intern("Node-path");
- keys.node_kind = pool_intern("Node-kind");
- keys.node_action = pool_intern("Node-action");
- keys.node_copyfrom_path = pool_intern("Node-copyfrom-path");
- keys.node_copyfrom_rev = pool_intern("Node-copyfrom-rev");
- keys.text_content_length = pool_intern("Text-content-length");
- keys.prop_content_length = pool_intern("Prop-content-length");
- keys.content_length = pool_intern("Content-length");
- keys.svn_fs_dump_format_version = pool_intern("SVN-fs-dump-format-version");
- /* version 3 format (Subversion 1.1.0) */
- keys.text_delta = pool_intern("Text-delta");
- keys.prop_delta = pool_intern("Prop-delta");
+ if (buffer_ferror(&input))
+ die_errno("error reading dump file");
+ die("invalid dump: unexpected end of file");
}
static void read_props(void)
{
- uint32_t len;
- uint32_t key = ~0;
- char *val = NULL;
- char *t;
- while ((t = buffer_read_line()) && strcmp(t, "PROPS-END")) {
- if (!strncmp(t, "K ", 2)) {
- len = atoi(&t[2]);
- key = pool_intern(buffer_read_string(len));
- buffer_read_line();
- } else if (!strncmp(t, "V ", 2)) {
- len = atoi(&t[2]);
- val = buffer_read_string(len);
- if (key == keys.svn_log) {
- /* Value length excludes terminating nul. */
- rev_ctx.log = log_copy(len + 1, val);
- } else if (key == keys.svn_author) {
- rev_ctx.author = pool_intern(val);
- } else if (key == keys.svn_date) {
- if (parse_date_basic(val, &rev_ctx.timestamp, NULL))
- fprintf(stderr, "Invalid timestamp: %s\n", val);
- } else if (key == keys.svn_executable) {
- node_ctx.type = REPO_MODE_EXE;
- } else if (key == keys.svn_special) {
- node_ctx.type = REPO_MODE_LNK;
- }
- key = ~0;
- buffer_read_line();
+ static struct strbuf key = STRBUF_INIT;
+ const char *t;
+ /*
+ * NEEDSWORK: to support simple mode changes like
+ * K 11
+ * svn:special
+ * V 1
+ * *
+ * D 14
+ * svn:executable
+ * we keep track of whether a mode has been set and reset to
+ * plain file only if not. We should be keeping track of the
+ * symlink and executable bits separately instead.
+ */
+ uint32_t type_set = 0;
+ while ((t = buffer_read_line(&input)) && strcmp(t, "PROPS-END")) {
+ uint32_t len;
+ const char *val;
+ const char type = t[0];
+ int ch;
+
+ if (!type || t[1] != ' ')
+ die("invalid property line: %s\n", t);
+ len = atoi(&t[2]);
+ val = buffer_read_string(&input, len);
+ if (!val || strlen(val) != len)
+ die_short_read();
+
+ /* Discard trailing newline. */
+ ch = buffer_read_char(&input);
+ if (ch == EOF)
+ die_short_read();
+ if (ch != '\n')
+ die("invalid dump: expected newline after %s", val);
+
+ switch (type) {
+ case 'K':
+ case 'D':
+ strbuf_reset(&key);
+ if (val)
+ strbuf_add(&key, val, len);
+ if (type == 'K')
+ continue;
+ assert(type == 'D');
+ val = NULL;
+ len = 0;
+ /* fall through */
+ case 'V':
+ handle_property(&key, val, len, &type_set);
+ strbuf_reset(&key);
+ continue;
+ default:
+ die("invalid property line: %s\n", t);
}
}
}
uint32_t mark = 0;
const uint32_t type = node_ctx.type;
const int have_props = node_ctx.propLength != LENGTH_UNKNOWN;
+ const int have_text = node_ctx.textLength != LENGTH_UNKNOWN;
- if (node_ctx.text_delta || node_ctx.prop_delta)
- die("text and property deltas not supported");
-
- if (node_ctx.textLength != LENGTH_UNKNOWN)
+ if (node_ctx.text_delta)
+ die("text deltas not supported");
+ if (have_text)
mark = next_blob_mark();
-
if (node_ctx.action == NODEACT_DELETE) {
- if (mark || have_props || node_ctx.srcRev)
+ if (have_text || have_props || node_ctx.srcRev)
die("invalid dump: deletion node has "
"copyfrom info, text, or properties");
return repo_delete(node_ctx.dst);
}
-
if (node_ctx.action == NODEACT_REPLACE) {
repo_delete(node_ctx.dst);
node_ctx.action = NODEACT_ADD;
}
-
if (node_ctx.srcRev) {
repo_copy(node_ctx.srcRev, node_ctx.src, node_ctx.dst);
- node_ctx.action = NODEACT_CHANGE;
+ if (node_ctx.action == NODEACT_ADD)
+ node_ctx.action = NODEACT_CHANGE;
}
-
- if (mark && type == REPO_MODE_DIR)
+ if (have_text && type == REPO_MODE_DIR)
die("invalid dump: directories cannot have text attached");
- if (node_ctx.action == NODEACT_CHANGE)
- node_ctx.type = repo_modify_path(node_ctx.dst, 0, mark);
- else /* Node-action: add */
- repo_add(node_ctx.dst, type, mark);
+ /*
+ * Decide on the new content (mark) and mode (node_ctx.type).
+ */
+ if (node_ctx.action == NODEACT_CHANGE && !~*node_ctx.dst) {
+ if (type != REPO_MODE_DIR)
+ die("invalid dump: root of tree is not a regular file");
+ } else if (node_ctx.action == NODEACT_CHANGE) {
+ uint32_t mode;
+ if (!have_text)
+ mark = repo_read_path(node_ctx.dst);
+ mode = repo_read_mode(node_ctx.dst);
+ if (mode == REPO_MODE_DIR && type != REPO_MODE_DIR)
+ die("invalid dump: cannot modify a directory into a file");
+ if (mode != REPO_MODE_DIR && type == REPO_MODE_DIR)
+ die("invalid dump: cannot modify a file into a directory");
+ node_ctx.type = mode;
+ } else if (node_ctx.action == NODEACT_ADD) {
+ if (!have_text && type != REPO_MODE_DIR)
+ die("invalid dump: adds node without text");
+ } else {
+ die("invalid dump: Node-path block lacks Node-action");
+ }
+ /*
+ * Adjust mode to reflect properties.
+ */
if (have_props) {
- const uint32_t old_mode = node_ctx.type;
- node_ctx.type = type;
+ if (!node_ctx.prop_delta)
+ node_ctx.type = type;
if (node_ctx.propLength)
read_props();
- if (node_ctx.type != old_mode)
- repo_modify_path(node_ctx.dst, node_ctx.type, mark);
}
- if (mark)
- fast_export_blob(node_ctx.type, mark, node_ctx.textLength);
+ /*
+ * Save the result.
+ */
+ repo_add(node_ctx.dst, node_ctx.type, mark);
+ if (have_text)
+ fast_export_blob(node_ctx.type, mark,
+ node_ctx.textLength, &input);
}
static void handle_revision(void)
char *t;
uint32_t active_ctx = DUMP_CTX;
uint32_t len;
- uint32_t key;
reset_dump_ctx(pool_intern(url));
- while ((t = buffer_read_line())) {
+ while ((t = buffer_read_line(&input))) {
val = strstr(t, ": ");
if (!val)
continue;
- *val++ = '\0';
- *val++ = '\0';
- key = pool_intern(t);
+ val += 2;
- if (key == keys.svn_fs_dump_format_version) {
+ /* strlen(key) + 1 */
+ switch (val - t - 1) {
+ case sizeof("SVN-fs-dump-format-version"):
+ if (constcmp(t, "SVN-fs-dump-format-version"))
+ continue;
dump_ctx.version = atoi(val);
if (dump_ctx.version > 3)
- die("expected svn dump format version <= 3, found %d",
+ die("expected svn dump format version <= 3, found %"PRIu32,
dump_ctx.version);
- } else if (key == keys.uuid) {
+ break;
+ case sizeof("UUID"):
+ if (constcmp(t, "UUID"))
+ continue;
dump_ctx.uuid = pool_intern(val);
- } else if (key == keys.revision_number) {
+ break;
+ case sizeof("Revision-number"):
+ if (constcmp(t, "Revision-number"))
+ continue;
if (active_ctx == NODE_CTX)
handle_node();
if (active_ctx != DUMP_CTX)
handle_revision();
active_ctx = REV_CTX;
reset_rev_ctx(atoi(val));
- } else if (key == keys.node_path) {
- if (active_ctx == NODE_CTX)
- handle_node();
- active_ctx = NODE_CTX;
- reset_node_ctx(val);
- } else if (key == keys.node_kind) {
+ break;
+ case sizeof("Node-path"):
+ if (prefixcmp(t, "Node-"))
+ continue;
+ if (!constcmp(t + strlen("Node-"), "path")) {
+ if (active_ctx == NODE_CTX)
+ handle_node();
+ active_ctx = NODE_CTX;
+ reset_node_ctx(val);
+ break;
+ }
+ if (constcmp(t + strlen("Node-"), "kind"))
+ continue;
if (!strcmp(val, "dir"))
node_ctx.type = REPO_MODE_DIR;
else if (!strcmp(val, "file"))
node_ctx.type = REPO_MODE_BLB;
else
fprintf(stderr, "Unknown node-kind: %s\n", val);
- } else if (key == keys.node_action) {
+ break;
+ case sizeof("Node-action"):
+ if (constcmp(t, "Node-action"))
+ continue;
if (!strcmp(val, "delete")) {
node_ctx.action = NODEACT_DELETE;
} else if (!strcmp(val, "add")) {
fprintf(stderr, "Unknown node-action: %s\n", val);
node_ctx.action = NODEACT_UNKNOWN;
}
- } else if (key == keys.node_copyfrom_path) {
+ break;
+ case sizeof("Node-copyfrom-path"):
+ if (constcmp(t, "Node-copyfrom-path"))
+ continue;
pool_tok_seq(REPO_MAX_PATH_DEPTH, node_ctx.src, "/", val);
- } else if (key == keys.node_copyfrom_rev) {
+ break;
+ case sizeof("Node-copyfrom-rev"):
+ if (constcmp(t, "Node-copyfrom-rev"))
+ continue;
node_ctx.srcRev = atoi(val);
- } else if (key == keys.text_content_length) {
- node_ctx.textLength = atoi(val);
- } else if (key == keys.prop_content_length) {
+ break;
+ case sizeof("Text-content-length"):
+ if (!constcmp(t, "Text-content-length")) {
+ node_ctx.textLength = atoi(val);
+ break;
+ }
+ if (constcmp(t, "Prop-content-length"))
+ continue;
node_ctx.propLength = atoi(val);
- } else if (key == keys.text_delta) {
- node_ctx.text_delta = !strcmp(val, "true");
- } else if (key == keys.prop_delta) {
+ break;
+ case sizeof("Text-delta"):
+ if (!constcmp(t, "Text-delta")) {
+ node_ctx.text_delta = !strcmp(val, "true");
+ break;
+ }
+ if (constcmp(t, "Prop-delta"))
+ continue;
node_ctx.prop_delta = !strcmp(val, "true");
- } else if (key == keys.content_length) {
+ break;
+ case sizeof("Content-length"):
+ if (constcmp(t, "Content-length"))
+ continue;
len = atoi(val);
- buffer_read_line();
+ t = buffer_read_line(&input);
+ if (!t)
+ die_short_read();
+ if (*t)
+ die("invalid dump: expected blank line after content length header");
if (active_ctx == REV_CTX) {
read_props();
} else if (active_ctx == NODE_CTX) {
active_ctx = REV_CTX;
} else {
fprintf(stderr, "Unexpected content length header: %"PRIu32"\n", len);
- buffer_skip_bytes(len);
+ if (buffer_skip_bytes(&input, len) != len)
+ die_short_read();
}
}
}
+ if (buffer_ferror(&input))
+ die_short_read();
if (active_ctx == NODE_CTX)
handle_node();
if (active_ctx != DUMP_CTX)
int svndump_init(const char *filename)
{
- if (buffer_init(filename))
+ if (buffer_init(&input, filename))
return error("cannot open %s: %s", filename, strerror(errno));
repo_init();
reset_dump_ctx(~0);
reset_rev_ctx(0);
reset_node_ctx(NULL);
- init_keys();
return 0;
}
reset_dump_ctx(~0);
reset_rev_ctx(0);
reset_node_ctx(NULL);
- if (buffer_deinit())
+ if (buffer_deinit(&input))
fprintf(stderr, "Input error\n");
if (ferror(stdout))
fprintf(stderr, "Output error\n");
void svndump_reset(void)
{
log_reset();
- buffer_reset();
+ buffer_reset(&input);
repo_reset();
reset_dump_ctx(~0);
reset_rev_ctx(0);
projects / thirdparty / git.git / blobdiff