diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-30 02:49:40 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-30 02:49:40 +0000 |
commit | c96f16e8103783f6b98d9f844ea3a7f2195e4834 (patch) | |
tree | 479bef5e7eb5d4f04ba171931c8b47335734e161 /debian/vendor-h2o/deps/libyrmcds/counter.c | |
parent | Merging upstream version 1.9.4. (diff) | |
download | dnsdist-debian/1.9.4-1.tar.xz dnsdist-debian/1.9.4-1.zip |
Adding debian version 1.9.4-1.debian/1.9.4-1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'debian/vendor-h2o/deps/libyrmcds/counter.c')
-rw-r--r-- | debian/vendor-h2o/deps/libyrmcds/counter.c | 408 |
1 files changed, 0 insertions, 408 deletions
diff --git a/debian/vendor-h2o/deps/libyrmcds/counter.c b/debian/vendor-h2o/deps/libyrmcds/counter.c deleted file mode 100644 index 748a231..0000000 --- a/debian/vendor-h2o/deps/libyrmcds/counter.c +++ /dev/null @@ -1,408 +0,0 @@ -// (C) 2013-2015 Cybozu et al. - -#include "yrmcds.h" -#include "yrmcds_portability.h" - -#include <errno.h> -#include <fcntl.h> -#include <limits.h> -#include <netdb.h> -#include <netinet/tcp.h> -#include <poll.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <sys/uio.h> -#include <unistd.h> - -static const size_t HEADER_SIZE = 12; -static const size_t RECV_SIZE = 4096; -static const size_t INITIAL_STATS_CAPACITY = 16; - -static inline void hton32(uint32_t i, char* p) { - uint32_t n = htobe32(i); - memcpy(p, &n, sizeof(n)); -} - -static inline void hton16(uint16_t i, char* p) { - uint16_t n = htobe16(i); - memcpy(p, &n, sizeof(n)); -} - -static inline uint32_t ntoh32(const char* p) { - uint32_t n; - memcpy(&n, p, sizeof(n)); - return be32toh(n); -} - -static inline uint16_t ntoh16(const char* p) { - uint16_t n; - memcpy(&n, p, sizeof(n)); - return be16toh(n); -} - -yrmcds_error -yrmcds_cnt_set_timeout(yrmcds_cnt* c, int timeout) { - if( c == NULL || timeout < 0 ) - return YRMCDS_BAD_ARGUMENT; - - struct timeval tv; - tv.tv_sec = timeout; - tv.tv_usec = 0; - - if( setsockopt(c->sock, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) == -1 ) - return YRMCDS_SYSTEM_ERROR; - if( setsockopt(c->sock, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv)) == -1 ) - return YRMCDS_SYSTEM_ERROR; - return YRMCDS_OK; -} - -yrmcds_error -yrmcds_cnt_close(yrmcds_cnt* c) { - if( c == NULL ) - return YRMCDS_BAD_ARGUMENT; - if( c->sock == -1 ) - return YRMCDS_OK; - - close(c->sock); - c->sock = -1; -#ifndef LIBYRMCDS_NO_INTERNAL_LOCK - pthread_mutex_destroy(&(c->lock)); -#endif - free(c->recvbuf); - c->recvbuf = NULL; - free(c->stats.records); - c->stats.records = NULL; - return YRMCDS_OK; -} - -yrmcds_error -yrmcds_cnt_shutdown(yrmcds_cnt* c) { - if( c == NULL ) - return YRMCDS_BAD_ARGUMENT; - if( shutdown(c->sock, SHUT_RD) == -1 ) - return YRMCDS_SYSTEM_ERROR; - return YRMCDS_OK; -} - -int -yrmcds_cnt_fileno(yrmcds_cnt* c) { - return c->sock; -} - -static yrmcds_error -recv_data(yrmcds_cnt* c) { - if( (c->capacity - c->used) < RECV_SIZE ) { - size_t new_capacity = c->capacity * 2; - char* new_buffer = (char*)realloc(c->recvbuf, new_capacity); - if( new_buffer == NULL ) - return YRMCDS_OUT_OF_MEMORY; - c->recvbuf = new_buffer; - c->capacity = new_capacity; - } - - ssize_t n; - AGAIN: - n = recv(c->sock, c->recvbuf + c->used, RECV_SIZE, 0); - if( n == -1 ) { - if( errno == EINTR ) goto AGAIN; - return YRMCDS_SYSTEM_ERROR; - } - if( n == 0 ) - return YRMCDS_DISCONNECTED; - c->used += (size_t)n; - return YRMCDS_OK; -} - -static yrmcds_error -append_stat(yrmcds_cnt_statistics* s, - uint16_t name_len, uint16_t value_len, - const char* name, const char* value) { - if( s->count == s->capacity ) { - size_t new_capacity = s->capacity * 2; - if( new_capacity < INITIAL_STATS_CAPACITY ) - new_capacity = INITIAL_STATS_CAPACITY; - yrmcds_cnt_stat* new_records = - realloc(s->records, sizeof(yrmcds_cnt_stat) * new_capacity); - if( new_records == NULL ) - return YRMCDS_OUT_OF_MEMORY; - s->capacity = new_capacity; - s->records = new_records; - } - - s->records[s->count].name_length = name_len; - s->records[s->count].value_length = value_len; - s->records[s->count].name = name; - s->records[s->count].value = value; - s->count += 1; - return YRMCDS_OK; -} - -static yrmcds_error -parse_statistics(yrmcds_cnt* c, const yrmcds_cnt_response* r) { - yrmcds_cnt_statistics* s = &c->stats; - s->count = 0; - - const char* p = r->body; - const char* end = r->body + r->body_length; - while( p < end ) { - if( p + 4 > end ) - return YRMCDS_PROTOCOL_ERROR; - uint16_t name_len = ntoh16(p); - uint16_t value_len = ntoh16(p + 2); - if( p + 4 + name_len + value_len > end ) - return YRMCDS_PROTOCOL_ERROR; - yrmcds_error err = - append_stat(s, name_len, value_len, p + 4, p + 4 + name_len); - if( err != YRMCDS_OK ) - return err; - p += 4 + name_len + value_len; - } - return YRMCDS_OK; -} - -static yrmcds_error -parse_dump_record(yrmcds_cnt* c, yrmcds_cnt_response* r) { - if( r->body_length == 0 ) { - // End of dump - return YRMCDS_OK; - } - if( r->body_length < 10 ) { - c->invalid = 1; - return YRMCDS_PROTOCOL_ERROR; - } - r->current_consumption = ntoh32(r->body); - r->max_consumption = ntoh32(r->body + 4); - r->name_length = ntoh16(r->body + 8); - if( r->body_length < 10 + r->name_length ) { - c->invalid = 1; - return YRMCDS_PROTOCOL_ERROR; - } - r->name = r->body + 10; - return YRMCDS_OK; -} - -yrmcds_error -yrmcds_cnt_recv(yrmcds_cnt* c, yrmcds_cnt_response* r) { - if( c == NULL || r == NULL ) - return YRMCDS_BAD_ARGUMENT; - if( c->invalid ) - return YRMCDS_PROTOCOL_ERROR; - - if( c->last_size > 0 ) { - size_t remain = c->used - c->last_size; - if( remain > 0 ) - memmove(c->recvbuf, c->recvbuf + c->last_size, remain); - c->used = remain; - c->last_size = 0; - } - - while( c->used < HEADER_SIZE ) { - yrmcds_error e = recv_data(c); - if( e != YRMCDS_OK ) return e; - } - - if( (uint8_t)c->recvbuf[0] != 0x91 ) { - c->invalid = 1; - return YRMCDS_PROTOCOL_ERROR; - } - - r->command = (yrmcds_cnt_command)c->recvbuf[1]; - r->status = (yrmcds_cnt_status)c->recvbuf[2]; - r->body_length = ntoh32(c->recvbuf + 4); - memcpy(&r->serial, c->recvbuf + 8, sizeof(r->serial)); - r->body = NULL; - r->resources = 0; - r->current_consumption = 0; - r->max_consumption = 0; - r->name_length = 0; - r->stats = NULL; - - if( r->body_length > 0 ) { - while( c->used < HEADER_SIZE + r->body_length ) { - yrmcds_error e = recv_data(c); - if( e != YRMCDS_OK ) return e; - } - r->body = c->recvbuf + HEADER_SIZE; - } - c->last_size = HEADER_SIZE + r->body_length; - - if( r->status != YRMCDS_STATUS_OK ) - return YRMCDS_OK; - - yrmcds_error err; - switch( r->command ) { - case YRMCDS_CNT_CMD_GET: - if( r->body_length < 4 ) { - c->invalid = 1; - return YRMCDS_PROTOCOL_ERROR; - } - r->current_consumption = ntoh32(r->body); - break; - - case YRMCDS_CNT_CMD_ACQUIRE: - if( r->body_length < 4 ) { - c->invalid = 1; - return YRMCDS_PROTOCOL_ERROR; - } - r->resources = ntoh32(r->body); - break; - - case YRMCDS_CNT_CMD_STATS: - err = parse_statistics(c, r); - if( err != YRMCDS_OK ) { - c->invalid = 1; - return err; - } - r->stats = &c->stats; - break; - - case YRMCDS_CNT_CMD_DUMP: - err = parse_dump_record(c, r); - if( err != YRMCDS_OK ) { - c->invalid = 1; - return err; - } - break; - - default: - // No body - break; - } - return YRMCDS_OK; -} - -static yrmcds_error -send_command(yrmcds_cnt* c, yrmcds_cnt_command cmd, uint32_t* serial, - size_t body1_len, const char* body1, - size_t body2_len, const char* body2) { - if( c == NULL || - body1_len > UINT32_MAX - body2_len || - (body1_len != 0 && body1 == NULL) || - (body2_len != 0 && body2 == NULL) ) - return YRMCDS_BAD_ARGUMENT; - -#ifndef LIBYRMCDS_NO_INTERNAL_LOCK - int e = pthread_mutex_lock(&c->lock); - if( e != 0 ) { - errno = e; - return YRMCDS_SYSTEM_ERROR; - } -#endif // ! LIBYRMCDS_NO_INTERNAL_LOCK - - c->serial += 1; - if( serial != NULL ) - *serial = c->serial; - - char header[HEADER_SIZE]; - header[0] = '\x90'; - header[1] = (char)cmd; - header[2] = 0; - header[3] = 0; - hton32((uint32_t)(body1_len + body2_len), header + 4); - memcpy(header + 8, &c->serial, 4); - - yrmcds_error ret = YRMCDS_OK; - - struct iovec iov[3]; - size_t iovcnt = 1; - - iov[0].iov_base = header; - iov[0].iov_len = HEADER_SIZE; - - if( body1_len != 0 ) { - iov[iovcnt].iov_base = (void*)body1; - iov[iovcnt].iov_len = body1_len; - ++iovcnt; - } - if( body2_len != 0 ) { - iov[iovcnt].iov_base = (void*)body2; - iov[iovcnt].iov_len = body2_len; - ++iovcnt; - } - - size_t i; - for( i = 0; i < iovcnt; ) { - ssize_t n = writev(c->sock, iov + i, (int)(iovcnt - i)); - size_t n2 = (size_t)n; - if( n == -1 ) { - if( errno == EINTR ) continue; - ret = YRMCDS_SYSTEM_ERROR; - break; - } - while( n2 > 0 ) { - if( n2 < iov[i].iov_len ) { - iov[i].iov_base = (char*)iov[i].iov_base + n2; - iov[i].iov_len -= n2; - break; - } - n2 -= iov[i].iov_len; - ++i; - } - } - -#ifndef LIBYRMCDS_NO_INTERNAL_LOCK - pthread_mutex_unlock(&c->lock); -#endif - return ret; -} - -yrmcds_error -yrmcds_cnt_noop(yrmcds_cnt* c, uint32_t* serial) { - return send_command(c, YRMCDS_CNT_CMD_NOOP, serial, - 0, NULL, 0, NULL); -} - -yrmcds_error -yrmcds_cnt_get(yrmcds_cnt* c, const char* name, size_t name_len, - uint32_t* serial) { - if( name == NULL || name_len == 0 || name_len > UINT16_MAX ) - return YRMCDS_BAD_ARGUMENT; - - char body[2]; - hton16((uint16_t)name_len, body); - return send_command(c, YRMCDS_CNT_CMD_GET, serial, - sizeof(body), body, name_len, name); -} - -yrmcds_error -yrmcds_cnt_acquire(yrmcds_cnt* c, const char* name, size_t name_len, - uint32_t resources, uint32_t initial, uint32_t* serial) { - if( name == NULL || name_len == 0 || name_len > UINT16_MAX || - resources == 0 || resources > initial ) - return YRMCDS_BAD_ARGUMENT; - - char body[10]; - hton32(resources, body); - hton32(initial, body + 4); - hton16((uint16_t)name_len, body + 8); - return send_command(c, YRMCDS_CNT_CMD_ACQUIRE, serial, - sizeof(body), body, name_len, name); -} - -yrmcds_error -yrmcds_cnt_release(yrmcds_cnt* c, const char* name, size_t name_len, - uint32_t resources, uint32_t* serial) { - if( name == NULL || name_len == 0 || name_len > UINT16_MAX ) - return YRMCDS_BAD_ARGUMENT; - - char body[6]; - hton32(resources, body); - hton16((uint16_t)name_len, body + 4); - return send_command(c, YRMCDS_CNT_CMD_RELEASE, serial, - sizeof(body), body, name_len, name); -} - -yrmcds_error -yrmcds_cnt_stats(yrmcds_cnt* c, uint32_t* serial) { - return send_command(c, YRMCDS_CNT_CMD_STATS, serial, - 0, NULL, 0, NULL); -} - -yrmcds_error -yrmcds_cnt_dump(yrmcds_cnt* c, uint32_t* serial) { - return send_command(c, YRMCDS_CNT_CMD_DUMP, serial, - 0, NULL, 0, NULL); -} |