X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=upload-pack.c;h=189b239cc093ab1d585627a647c7c36bf65efe18;hb=3fc8284e2114624f2657142b3fecdc6f514b2090;hp=7b86f6965b5306f2162a9076f6ab3bbc1cc32a4b;hpb=b8ca3fbd462f94b980af828528c8f1fa59601b57;p=git.git diff --git a/upload-pack.c b/upload-pack.c index 7b86f6965..189b239cc 100644 --- a/upload-pack.c +++ b/upload-pack.c @@ -1,27 +1,29 @@ +#include +#include +#include #include "cache.h" #include "refs.h" #include "pkt-line.h" +#include "sideband.h" #include "tag.h" #include "object.h" #include "commit.h" #include "exec_cmd.h" -#include -#include -#include static const char upload_pack_usage[] = "git-upload-pack [--strict] [--timeout=nn] "; #define THEY_HAVE (1U << 0) #define OUR_REF (1U << 1) #define WANTED (1U << 2) -#define MAX_HAS 256 -#define MAX_NEEDS 256 -static int nr_has = 0, nr_needs = 0, multi_ack = 0, nr_our_refs = 0; -static int use_thin_pack = 0; -static unsigned char has_sha1[MAX_HAS][20]; -static unsigned char needs_sha1[MAX_NEEDS][20]; -static unsigned int timeout = 0; -static int use_sideband = 0; +static int multi_ack, nr_our_refs; +static int use_thin_pack; +static struct object_array have_obj; +static struct object_array want_obj; +static unsigned int timeout; +/* 0 for no sideband, + * otherwise maximum packet size (up to 65520 bytes). + */ +static int use_sideband; static void reset_timeout(void) { @@ -35,41 +37,18 @@ static int strip(char *line, int len) return len; } -#define PACKET_MAX 1000 static ssize_t send_client_data(int fd, const char *data, ssize_t sz) { - ssize_t ssz; - const char *p; - - if (!data) { - if (!use_sideband) - return 0; - packet_flush(1); - } - - if (!use_sideband) { - if (fd == 3) - /* emergency quit */ - fd = 2; - return safe_write(fd, data, sz); + if (use_sideband) + return send_sideband(1, fd, data, sz, use_sideband); + if (fd == 3) + /* emergency quit */ + fd = 2; + if (fd == 2) { + xwrite(fd, data, sz); + return sz; } - p = data; - ssz = sz; - while (sz) { - unsigned n; - char hdr[5]; - - n = sz; - if (PACKET_MAX - 5 < n) - n = PACKET_MAX - 5; - sprintf(hdr, "%04x", n + 5); - hdr[4] = fd; - safe_write(1, hdr, 5); - safe_write(1, p, n); - p += n; - sz -= n; - } - return ssz; + return safe_write(fd, data, sz); } static void create_pack_file(void) @@ -79,7 +58,7 @@ static void create_pack_file(void) */ int lp_pipe[2], pu_pipe[2], pe_pipe[2]; pid_t pid_rev_list, pid_pack_objects; - int create_full_pack = (nr_our_refs == nr_needs && !nr_has); + int create_full_pack = (nr_our_refs == want_obj.nr && !have_obj.nr); char data[8193], progress[128]; char abort_msg[] = "aborting due to possible repository " "corruption on the remote side."; @@ -95,15 +74,15 @@ static void create_pack_file(void) int i; int args; const char **argv; + const char **p; char *buf; - char **p; if (create_full_pack) { args = 10; use_thin_pack = 0; /* no point doing it */ } else - args = nr_has + nr_needs + 5; + args = have_obj.nr + want_obj.nr + 5; p = xmalloc(args * sizeof(char *)); argv = (const char **) p; buf = xmalloc(args * 45); @@ -114,20 +93,22 @@ static void create_pack_file(void) close(lp_pipe[1]); *p++ = "rev-list"; *p++ = use_thin_pack ? "--objects-edge" : "--objects"; - if (create_full_pack || MAX_NEEDS <= nr_needs) + if (create_full_pack) *p++ = "--all"; else { - for (i = 0; i < nr_needs; i++) { + for (i = 0; i < want_obj.nr; i++) { + struct object *o = want_obj.objects[i].item; *p++ = buf; - memcpy(buf, sha1_to_hex(needs_sha1[i]), 41); + memcpy(buf, sha1_to_hex(o->sha1), 41); buf += 41; } } if (!create_full_pack) - for (i = 0; i < nr_has; i++) { + for (i = 0; i < have_obj.nr; i++) { + struct object *o = have_obj.objects[i].item; *p++ = buf; *buf++ = '^'; - memcpy(buf, sha1_to_hex(has_sha1[i]), 41); + memcpy(buf, sha1_to_hex(o->sha1), 41); buf += 41; } *p++ = NULL; @@ -178,6 +159,8 @@ static void create_pack_file(void) ssize_t sz; int pe, pu, pollsize; + reset_timeout(); + pollsize = 0; pe = pu = -1; @@ -302,7 +285,8 @@ static void create_pack_file(void) goto fail; fprintf(stderr, "flushed.\n"); } - send_client_data(1, NULL, 0); + if (use_sideband) + packet_flush(1); return; } fail: @@ -316,35 +300,37 @@ static void create_pack_file(void) static int got_sha1(char *hex, unsigned char *sha1) { + struct object *o; + if (get_sha1_hex(hex, sha1)) die("git-upload-pack: expected SHA1 object, got '%s'", hex); if (!has_sha1_file(sha1)) return 0; - if (nr_has < MAX_HAS) { - struct object *o = lookup_object(sha1); - if (!(o && o->parsed)) - o = parse_object(sha1); - if (!o) - die("oops (%s)", sha1_to_hex(sha1)); - if (o->type == TYPE_COMMIT) { - struct commit_list *parents; - if (o->flags & THEY_HAVE) - return 0; - o->flags |= THEY_HAVE; - for (parents = ((struct commit*)o)->parents; - parents; - parents = parents->next) - parents->item->object.flags |= THEY_HAVE; - } - memcpy(has_sha1[nr_has++], sha1, 20); + + o = lookup_object(sha1); + if (!(o && o->parsed)) + o = parse_object(sha1); + if (!o) + die("oops (%s)", sha1_to_hex(sha1)); + if (o->type == OBJ_COMMIT) { + struct commit_list *parents; + if (o->flags & THEY_HAVE) + return 0; + o->flags |= THEY_HAVE; + for (parents = ((struct commit*)o)->parents; + parents; + parents = parents->next) + parents->item->object.flags |= THEY_HAVE; } + add_object_array(o, NULL, &have_obj); return 1; } static int get_common_commits(void) { static char line[1000]; - unsigned char sha1[20], last_sha1[20]; + unsigned char sha1[20]; + char hex[41], last_hex[41]; int len; track_object_refs = 0; @@ -355,29 +341,28 @@ static int get_common_commits(void) reset_timeout(); if (!len) { - if (nr_has == 0 || multi_ack) + if (have_obj.nr == 0 || multi_ack) packet_write(1, "NAK\n"); continue; } len = strip(line, len); if (!strncmp(line, "have ", 5)) { - if (got_sha1(line+5, sha1) && - (multi_ack || nr_has == 1)) { - if (nr_has >= MAX_HAS) - multi_ack = 0; - packet_write(1, "ACK %s%s\n", - sha1_to_hex(sha1), - multi_ack ? " continue" : ""); - if (multi_ack) - memcpy(last_sha1, sha1, 20); + if (got_sha1(line+5, sha1)) { + memcpy(hex, sha1_to_hex(sha1), 41); + if (multi_ack) { + const char *msg = "ACK %s continue\n"; + packet_write(1, msg, hex); + memcpy(last_hex, hex, 41); + } + else if (have_obj.nr == 1) + packet_write(1, "ACK %s\n", hex); } continue; } if (!strcmp(line, "done")) { - if (nr_has > 0) { + if (have_obj.nr > 0) { if (multi_ack) - packet_write(1, "ACK %s\n", - sha1_to_hex(last_sha1)); + packet_write(1, "ACK %s\n", last_hex); return 0; } packet_write(1, "NAK\n"); @@ -387,39 +372,31 @@ static int get_common_commits(void) } } -static int receive_needs(void) +static void receive_needs(void) { static char line[1000]; - int len, needs; + int len; - needs = 0; for (;;) { struct object *o; - unsigned char dummy[20], *sha1_buf; + unsigned char sha1_buf[20]; len = packet_read_line(0, line, sizeof(line)); reset_timeout(); if (!len) - return needs; - - sha1_buf = dummy; - if (needs == MAX_NEEDS) { - fprintf(stderr, - "warning: supporting only a max of %d requests. " - "sending everything instead.\n", - MAX_NEEDS); - } - else if (needs < MAX_NEEDS) - sha1_buf = needs_sha1[needs]; + return; - if (strncmp("want ", line, 5) || get_sha1_hex(line+5, sha1_buf)) + if (strncmp("want ", line, 5) || + get_sha1_hex(line+5, sha1_buf)) die("git-upload-pack: protocol error, " "expected to get sha, not '%s'", line); if (strstr(line+45, "multi_ack")) multi_ack = 1; if (strstr(line+45, "thin-pack")) use_thin_pack = 1; - if (strstr(line+45, "side-band")) - use_sideband = 1; + if (strstr(line+45, "side-band-64k")) + use_sideband = LARGE_PACKET_MAX; + else if (strstr(line+45, "side-band")) + use_sideband = DEFAULT_PACKET_MAX; /* We have sent all our refs already, and the other end * should have chosen out of them; otherwise they are @@ -434,14 +411,14 @@ static int receive_needs(void) die("git-upload-pack: not our ref %s", line+5); if (!(o->flags & WANTED)) { o->flags |= WANTED; - needs++; + add_object_array(o, NULL, &want_obj); } } } static int send_ref(const char *refname, const unsigned char *sha1) { - static char *capabilities = "multi_ack thin-pack side-band"; + static const char *capabilities = "multi_ack thin-pack side-band side-band-64k"; struct object *o = parse_object(sha1); if (!o) @@ -457,25 +434,24 @@ static int send_ref(const char *refname, const unsigned char *sha1) o->flags |= OUR_REF; nr_our_refs++; } - if (o->type == TYPE_TAG) { + if (o->type == OBJ_TAG) { o = deref_tag(o, refname, 0); packet_write(1, "%s %s^{}\n", sha1_to_hex(o->sha1), refname); } return 0; } -static int upload_pack(void) +static void upload_pack(void) { reset_timeout(); head_ref(send_ref); for_each_ref(send_ref); packet_flush(1); - nr_needs = receive_needs(); - if (!nr_needs) - return 0; - get_common_commits(); - create_pack_file(); - return 0; + receive_needs(); + if (want_obj.nr) { + get_common_commits(); + create_pack_file(); + } } int main(int argc, char **argv)