Update socketd example project
Signed-off-by: Guo Wenxue <guowenxue@gmail.com>
1 files renamed
6 files added
5 files modified
New file |
| | |
| | | /******************************************************************************** |
| | | * Copyright: (C) 2020 LingYun IoT System Studio |
| | | * All rights reserved. |
| | | * |
| | | * Filename: database.c |
| | | * Description: This library used to operate blob packet in sqlite database. |
| | | * |
| | | * Version: 1.0.0(2020年05月13日) |
| | | * Author: Guo Wenxue <guowenxue@gmail.com> |
| | | * ChangeLog: 1, Release initial version on "2020年05月13日 12时14分23秒" |
| | | * |
| | | ********************************************************************************/ |
| | | |
| | | #include <stdio.h> |
| | | #include <stdlib.h> |
| | | #include <unistd.h> |
| | | #include <string.h> |
| | | #include "database.h" |
| | | #include "logger.h" |
| | | |
| | | /* Blob packet table name */ |
| | | #define TABLE_NAME "PackTable" |
| | | |
| | | /* Use static global handler here in order to simplify the API, |
| | | * But it will make this library not thread safe |
| | | */ |
| | | static sqlite3 *s_clidb = NULL; |
| | | |
| | | |
| | | /* description: open or create sqlite database if not exist |
| | | * input args: |
| | | * $db_file: sqlite database file name |
| | | * return value: <0: failure 0:ok |
| | | * */ |
| | | int database_init(const char *db_file) |
| | | { |
| | | char sql[SQL_COMMAND_LEN]={0}; |
| | | char *errmsg = NULL; |
| | | |
| | | if( !db_file ) |
| | | { |
| | | log_error("%s() Invalid input arguments\n", __func__); |
| | | return -1; |
| | | } |
| | | |
| | | /*+------------------------------------------+ |
| | | *| database already exist, just open it | |
| | | *+------------------------------------------+*/ |
| | | if( 0==access(db_file, F_OK) ) |
| | | { |
| | | if( SQLITE_OK != sqlite3_open(db_file, &s_clidb) ) |
| | | { |
| | | log_error("open database file '%s' failure\n", db_file); |
| | | return -2; |
| | | } |
| | | log_info("open database file '%s' ok\n", db_file); |
| | | return 0; |
| | | } |
| | | |
| | | /*+-----------------------------------------+ |
| | | *| database not exist, create and init it | |
| | | *+-----------------------------------------+*/ |
| | | |
| | | if( SQLITE_OK != sqlite3_open(db_file, &s_clidb) ) |
| | | { |
| | | log_error("create database file '%s' failure\n", db_file); |
| | | return -2; |
| | | } |
| | | |
| | | /* SQLite continues without syncing as soon as it has handed data off to the operating system */ |
| | | sqlite3_exec(s_clidb, "pragma synchronous = OFF; ", NULL, NULL, NULL); |
| | | |
| | | /* enable full auto vacuum, Auto increase/decrease */ |
| | | sqlite3_exec(s_clidb, "pragma auto_vacuum = 2 ; ", NULL, NULL, NULL); |
| | | |
| | | /* Create firehost table in the database */ |
| | | snprintf(sql, sizeof(sql), "CREATE TABLE %s(packet BLOB);", TABLE_NAME); |
| | | if( SQLITE_OK != sqlite3_exec(s_clidb, sql, NULL, NULL, &errmsg) ) |
| | | { |
| | | log_error("create data_table in database file '%s' failure: %s\n", db_file, errmsg); |
| | | sqlite3_free(errmsg); /* free errmsg */ |
| | | sqlite3_close(s_clidb); /* close databse */ |
| | | unlink(db_file); /* remove database file */ |
| | | return -3; |
| | | } |
| | | |
| | | log_info("create and init database file '%s' ok\n", db_file); |
| | | return 0; |
| | | } |
| | | |
| | | |
| | | /* description: close sqlite database handler |
| | | * return value: none |
| | | */ |
| | | void database_term(void) |
| | | { |
| | | log_warn("close sqlite database now\n"); |
| | | sqlite3_close(s_clidb); |
| | | |
| | | return ; |
| | | } |
| | | |
| | | |
| | | /* description: push a blob packet into database |
| | | * input args: |
| | | * $pack: blob packet data address |
| | | * $size: blob packet data bytes |
| | | * return value: <0: failure 0:ok |
| | | */ |
| | | int database_push_packet(void *pack, int size) |
| | | { |
| | | char sql[SQL_COMMAND_LEN]={0}; |
| | | int rv = 0; |
| | | sqlite3_stmt *stat = NULL; |
| | | |
| | | if( !pack || size<=0 ) |
| | | { |
| | | log_error("%s() Invalid input arguments\n", __func__); |
| | | return -1; |
| | | } |
| | | |
| | | if( ! s_clidb ) |
| | | { |
| | | log_error("sqlite database not opened\n"); |
| | | return -2; |
| | | } |
| | | |
| | | snprintf(sql, sizeof(sql), "insert into %s(packet) values(?)", TABLE_NAME); |
| | | rv = sqlite3_prepare_v2(s_clidb, sql, -1, &stat, NULL); |
| | | if(SQLITE_OK!=rv || !stat) |
| | | { |
| | | log_error("blob add sqlite3_prepare_v2 failure\n"); |
| | | rv = -2; |
| | | goto OUT; |
| | | } |
| | | |
| | | if( SQLITE_OK != sqlite3_bind_blob(stat, 1, pack, size, NULL) ) |
| | | { |
| | | log_error("blob add sqlite3_bind_blob failure\n"); |
| | | rv = -3; |
| | | goto OUT; |
| | | } |
| | | |
| | | rv = sqlite3_step(stat); |
| | | if( SQLITE_DONE!=rv && SQLITE_ROW!=rv ) |
| | | { |
| | | log_error("blob add sqlite3_step failure\n"); |
| | | rv = -4; |
| | | goto OUT; |
| | | } |
| | | |
| | | OUT: |
| | | sqlite3_finalize(stat); |
| | | |
| | | if( rv < 0 ) |
| | | log_error("add new blob packet into database failure, rv=%d\n", rv); |
| | | else |
| | | log_info("add new blob packet into database ok\n"); |
| | | |
| | | return rv; |
| | | } |
| | | |
| | | |
| | | /* description: pop the first blob packet from database |
| | | * input args: |
| | | * $pack: blob packet output buffer address |
| | | * $size: blob packet output buffer size |
| | | * $byte: blob packet bytes |
| | | * return value: <0: failure 0:ok |
| | | */ |
| | | int database_pop_packet(void *pack, int size, int *bytes) |
| | | { |
| | | char sql[SQL_COMMAND_LEN]={0}; |
| | | int rv = 0; |
| | | sqlite3_stmt *stat = NULL; |
| | | const void *blob_ptr; |
| | | |
| | | if( !pack || size<=0 ) |
| | | { |
| | | log_error("%s() Invalid input arguments\n", __func__); |
| | | return -1; |
| | | } |
| | | |
| | | if( ! s_clidb ) |
| | | { |
| | | log_error("sqlite database not opened\n"); |
| | | return -2; |
| | | } |
| | | |
| | | /* Only query the first packet record */ |
| | | snprintf(sql, sizeof(sql), "select packet from %s limit 0,1;", TABLE_NAME); |
| | | rv = sqlite3_prepare_v2(s_clidb, sql, -1, &stat, NULL); |
| | | if(SQLITE_OK!=rv || !stat) |
| | | { |
| | | log_error("firehost sqlite3_prepare_v2 failure\n"); |
| | | rv = -3; |
| | | goto out; |
| | | } |
| | | |
| | | rv = sqlite3_step(stat); |
| | | if( SQLITE_DONE!=rv && SQLITE_ROW!=rv ) |
| | | { |
| | | log_error("firehost sqlite3_step failure\n"); |
| | | rv = -5; |
| | | goto out; |
| | | } |
| | | |
| | | /* 1rd argument<0> means first segement is packet */ |
| | | blob_ptr = sqlite3_column_blob(stat, 0); |
| | | if( !blob_ptr ) |
| | | { |
| | | rv = -6; |
| | | goto out; |
| | | } |
| | | |
| | | *bytes = sqlite3_column_bytes(stat, 0); |
| | | |
| | | if( *bytes > size ) |
| | | { |
| | | log_error("blob packet bytes[%d] larger than bufsize[%d]\n", *bytes, size); |
| | | *bytes = 0; |
| | | rv = -1; |
| | | } |
| | | |
| | | memcpy(pack, blob_ptr, *bytes); |
| | | rv = 0; |
| | | |
| | | out: |
| | | sqlite3_finalize(stat); |
| | | return rv; |
| | | } |
| | | |
| | | |
| | | /* description: remove the first blob packet from database |
| | | * input args: none |
| | | * return value: <0: failure 0:ok |
| | | */ |
| | | int database_del_packet(void) |
| | | { |
| | | char sql[SQL_COMMAND_LEN]={0}; |
| | | char *errmsg = NULL; |
| | | |
| | | if( ! s_clidb ) |
| | | { |
| | | log_error("sqlite database not opened\n"); |
| | | return -2; |
| | | } |
| | | |
| | | /* remove packet from db */ |
| | | memset(sql, 0, sizeof(sql)); |
| | | snprintf(sql, sizeof(sql), "delete from %s limit 0,1;", TABLE_NAME); |
| | | if( SQLITE_OK != sqlite3_exec(s_clidb, sql, NULL, 0, &errmsg) ) |
| | | { |
| | | log_error("delete first blob packet from database failure: %s\n", errmsg); |
| | | sqlite3_free(errmsg); |
| | | return -2; |
| | | } |
| | | log_warn("delete first blob packet from database ok\n"); |
| | | |
| | | /* Vacuum the database */ |
| | | sqlite3_exec(s_clidb, "VACUUM;", NULL, 0, NULL); |
| | | |
| | | return 0; |
| | | } |
| | | |
New file |
| | |
| | | /******************************************************************************** |
| | | * Copyright: (C) 2020 LingYun IoT System Studio |
| | | * All rights reserved. |
| | | * |
| | | * Filename: database.h |
| | | * Description: This library used to operate blob packet in sqlite database. |
| | | * |
| | | * Version: 1.0.0(2020年05月13日) |
| | | * Author: Guo Wenxue <guowenxue@gmail.com> |
| | | * ChangeLog: 1, Release initial version on "2020年05月13日 12时14分23秒" |
| | | * |
| | | ********************************************************************************/ |
| | | #ifndef _DATABASE_H_ |
| | | #define _DATABASE_H_ |
| | | |
| | | #include "sqlite3.h" |
| | | |
| | | #define SQL_COMMAND_LEN 256 |
| | | |
| | | /* description: open or create sqlite database if not exist |
| | | * input args: |
| | | * $db_file: sqlite database file name |
| | | * return value: <0: failure 0:ok |
| | | * */ |
| | | extern int database_init(const char *db_file); |
| | | |
| | | |
| | | /* description: close sqlite database handler |
| | | * return value: none |
| | | */ |
| | | extern void database_term(void); |
| | | |
| | | |
| | | /* description: push a blob packet into database |
| | | * input args: |
| | | * $pack: blob packet data address |
| | | * $size: blob packet data bytes |
| | | * return value: <0: failure 0:ok |
| | | */ |
| | | extern int database_push_packet(void *pack, int size); |
| | | |
| | | |
| | | /* description: pop the first blob packet from database |
| | | * input args: |
| | | * $pack: blob packet output buffer address |
| | | * $size: blob packet output buffer size |
| | | * $byte: blob packet bytes |
| | | * return value: <0: failure 0:ok |
| | | */ |
| | | extern int database_pop_packet(void *pack, int size, int *bytes); |
| | | |
| | | |
| | | /* description: remove the first blob packet from database |
| | | * input args: none |
| | | * return value: <0: failure 0:ok |
| | | */ |
| | | extern int database_del_packet(void); |
| | | |
| | | |
| | | #endif /* ----- #ifndef _DATABASE_H_ ----- */ |
| | |
| | | struct dirent *direntp; |
| | | int fd =-1; |
| | | char *ptr; |
| | | float value; |
| | | int found = 0; |
| | | |
| | | if( !temp ) |
| | |
| | | * |
| | | * Filename: logger.c |
| | | * Description: This file is common logger API functions |
| | | * |
| | | * |
| | | * Version: 1.0.0(11/08/23) |
| | | * Author: Guo Wenxue <guowenxue@gmail.com> |
| | | * ChangeLog: 1, Release initial version on "11/08/23 16:18:43" |
| | | * |
| | | * |
| | | ********************************************************************************/ |
| | | |
| | | #include <stdio.h> |
| | |
| | | * |
| | | * Filename: logger.h |
| | | * Description: This file is common logger API functions |
| | | * |
| | | * |
| | | * Version: 1.0.0(11/08/23) |
| | | * Author: Guo Wenxue <guowenxue@gmail.com> |
| | | * ChangeLog: 1, Release initial version on "11/08/23 16:18:43" |
| | | * |
| | | * |
| | | ********************************************************************************/ |
| | | |
| | | #ifndef _LOGGER_H_ |
New file |
| | |
| | | /********************************************************************************* |
| | | * Copyright: (C) 2022 LingYun IoT System Studio |
| | | * All rights reserved. |
| | | * |
| | | * Filename: packet.c |
| | | * Description: This file is packet API functions |
| | | * |
| | | * Version: 1.0.0(18/04/22) |
| | | * Author: Guo Wenxue <guowenxue@gmail.com> |
| | | * ChangeLog: 1, Release initial version on "18/04/22 16:30:25" |
| | | * |
| | | ********************************************************************************/ |
| | | |
| | | #include <stdio.h> |
| | | #include <string.h> |
| | | #include <unistd.h> |
| | | #include <time.h> |
| | | #include "packet.h" |
| | | #include "logger.h" |
| | | #include "ds18b20.h" |
| | | |
| | | int get_devid(char *devid, int size, int sn) |
| | | { |
| | | if( !devid || size<DEVID_LEN ) |
| | | { |
| | | log_error("Invalid input arugments\n"); |
| | | return -1; |
| | | } |
| | | |
| | | memset(devid, 0, size); |
| | | snprintf(devid, size, "rpi#%04d", sn); |
| | | return 0; |
| | | } |
| | | |
| | | int get_time(struct tm *ptm) |
| | | { |
| | | if( !ptm ) |
| | | { |
| | | log_error("Invalid input arugments\n"); |
| | | return -1; |
| | | } |
| | | |
| | | |
| | | time_t now = time(NULL); |
| | | localtime_r(&now, ptm); |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | int packet_segmented_pack(pack_info_t *pack_info, char *pack_buf, int size) |
| | | { |
| | | char strtime[TIME_LEN] = {'\0'}; |
| | | struct tm *ptm; |
| | | |
| | | if( !pack_info || !pack_buf || size<=0 ) |
| | | { |
| | | log_error("Invalid input arguments\n"); |
| | | return -1; |
| | | } |
| | | |
| | | ptm = &pack_info->sample_time; |
| | | snprintf(strtime, sizeof(strtime), "%04d-%02d-%2d %02d:%02d:%02d", |
| | | ptm->tm_year+1900, ptm->tm_mon+1, ptm->tm_mday, |
| | | ptm->tm_hour, ptm->tm_min, ptm->tm_sec); |
| | | |
| | | |
| | | memset(pack_buf, 0, size); |
| | | snprintf(pack_buf, size, "%s|%s|%.3f", pack_info->devid, strtime, pack_info->temper); |
| | | |
| | | return strlen(pack_buf); |
| | | } |
| | | |
| | | int packet_json_pack(pack_info_t *pack_info, char *pack_buf, int size) |
| | | { |
| | | char strtime[TIME_LEN] = {'\0'}; |
| | | struct tm *ptm; |
| | | |
| | | if( !pack_info || !pack_buf || size<=0 ) |
| | | { |
| | | log_error("Invalid input arguments\n"); |
| | | return -1; |
| | | } |
| | | |
| | | ptm = &pack_info->sample_time; |
| | | snprintf(strtime, sizeof(strtime), "%04d-%02d-%2d %02d:%02d:%02d", |
| | | ptm->tm_year+1900, ptm->tm_mon+1, ptm->tm_mday, |
| | | ptm->tm_hour, ptm->tm_min, ptm->tm_sec); |
| | | |
| | | memset(pack_buf, 0, size); |
| | | snprintf(pack_buf, size, "{\"devid\":\"%s\", \"time\":\"%s\",\"temperature\":\"%.3f\"}", |
| | | pack_info->devid, strtime, pack_info->temper); |
| | | |
| | | return strlen(pack_buf); |
| | | } |
| | | |
New file |
| | |
| | | /******************************************************************************** |
| | | * Copyright: (C) 2022 LingYun IoT System Studio |
| | | * All rights reserved. |
| | | * |
| | | * Filename: packet.h |
| | | * Description: This head file is packet API functions. |
| | | * |
| | | * Version: 1.0.0(18/04/22) |
| | | * Author: Guo Wenxue <guowenxue@gmail.com> |
| | | * ChangeLog: 1, Release initial version on "18/04/22 16:24:40" |
| | | * |
| | | ********************************************************************************/ |
| | | |
| | | |
| | | #ifndef _PACKET_H_ |
| | | #define _PACKET_H_ |
| | | |
| | | #include <stdint.h> |
| | | #include <time.h> |
| | | |
| | | #define DEVID_LEN 16 |
| | | #define TIME_LEN 32 |
| | | |
| | | typedef struct pack_info_s |
| | | { |
| | | char devid[DEVID_LEN]; /* device ID */ |
| | | struct tm sample_time; /* sample time */ |
| | | float temper; /* sample temperature */ |
| | | } pack_info_t; |
| | | |
| | | /* packet function pointer type */ |
| | | typedef int (* pack_proc_t)(pack_info_t *pack_info, char *pack_buf, int size); |
| | | |
| | | /* description: get device ID |
| | | * input args: |
| | | * $devid : device ID string |
| | | * $size : device ID output buffer size |
| | | * $sn : serial number |
| | | * return value: <0: failure 0:ok |
| | | */ |
| | | extern int get_devid(char *devid, int size, int sn); |
| | | |
| | | /* description: get current system in struct tm |
| | | * input args: |
| | | * $sample_time: sample time in struct tm |
| | | * return value: <0: failure 0:ok |
| | | */ |
| | | extern int get_time(struct tm *sample_time); |
| | | |
| | | /* description: package a string packet in format "devid|time|temper" |
| | | * input args: |
| | | * $pack_info: packet data contains devid, time and temperature |
| | | * $pack_buf : packet output buffer |
| | | * $size : packet output buffer size |
| | | * return value: <0: failure >0: packet bytes |
| | | */ |
| | | extern int packet_segmented_pack(pack_info_t *pack_info, char *pack_buf, int size); |
| | | |
| | | |
| | | /* description: package a json string packet: {"devid":"xxx", "time":"xxx", "temperature":"xxx"} |
| | | * input args: |
| | | * $pack_info: packet data contains devid, time and temperature |
| | | * $pack_buf : packet output buffer |
| | | * $size : packet output buffer size |
| | | * return value: <0: failure >0: packet bytes |
| | | */ |
| | | extern int packet_json_pack(pack_info_t *pack_info, char *pack_buf, int size); |
| | | |
| | | |
| | | #endif /* ----- #ifndef _PACKET_H_ ----- */ |
| | |
| | | |
| | | if( check_daemon_running(pidfile) ) |
| | | { |
| | | log_error("Program already running, process exit now"); |
| | | log_error("Program already running, process exit now\n"); |
| | | return -1; |
| | | } |
| | | |
New file |
| | |
| | | /******************************************************************************** |
| | | * Copyright: (C) 2022 LingYun IoT System Studio |
| | | * All rights reserved. |
| | | * |
| | | * Filename: socket.c |
| | | * Description: This file is for socket API functions |
| | | * |
| | | * Version: 1.0.0(18/04/22) |
| | | * Author: Guo Wenxue <guowenxue@gmail.com> |
| | | * ChangeLog: 1, Release initial version on "18/04/22 17:09:59" |
| | | * |
| | | ********************************************************************************/ |
| | | #include <stdio.h> |
| | | #include <unistd.h> |
| | | #include <string.h> |
| | | #include <netdb.h> |
| | | #include <fcntl.h> |
| | | #include <unistd.h> |
| | | #include <sys/un.h> |
| | | #include <poll.h> |
| | | #include <errno.h> |
| | | #include <sys/types.h> |
| | | #include <sys/socket.h> |
| | | #include <linux/sockios.h> |
| | | #include <sys/ioctl.h> |
| | | #include <sys/socket.h> |
| | | #include <netinet/in.h> |
| | | #include <netinet/tcp.h> |
| | | #include <arpa/inet.h> |
| | | #include <sys/resource.h> |
| | | |
| | | #include "socket.h" |
| | | #include "logger.h" |
| | | |
| | | /* description: initial socket context |
| | | * input args: |
| | | * $sock: socket context pointer |
| | | * $host: connect server hostname for client mode, unused for server mode |
| | | * $port: connect server port for client mode or listen port for server mode |
| | | * return value: <0: failure 0:ok |
| | | */ |
| | | int socket_init(socket_ctx_t *sock, char *host, int port) |
| | | { |
| | | if( !sock || port<=0 ) |
| | | return -1; |
| | | |
| | | memset( sock, 0, sizeof(*sock) ); |
| | | sock->fd = -1; |
| | | sock->port = port; |
| | | if( host ) /* server no need it */ |
| | | { |
| | | strncpy(sock->host, host, HOSTNAME_LEN); |
| | | } |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | /* description: close socket |
| | | * input args: |
| | | * $sock: socket context pointer |
| | | * return value: <0: failure 0:ok |
| | | */ |
| | | int socket_term(socket_ctx_t *sock) |
| | | { |
| | | if( !sock ) |
| | | return -1; |
| | | |
| | | if( sock->fd > 0) |
| | | { |
| | | close(sock->fd); |
| | | sock->fd = -1; |
| | | } |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | /* description: socket server start listen |
| | | * input args: |
| | | * $sock: socket context pointer |
| | | * return value: <0: failure 0:ok |
| | | */ |
| | | #if 0 /* --TBD-- */ |
| | | int socket_listen(socket_ctx_t *sock) |
| | | { |
| | | int rv = 0; |
| | | struct sockaddr_in addr; |
| | | int backlog = 13; |
| | | |
| | | if( !sock ) |
| | | return -1; |
| | | |
| | | set_socket_rlimit(); /* set max open socket count */ |
| | | } |
| | | #endif |
| | | |
| | | /* description: socket connect to server in block mode |
| | | * input args: |
| | | * $sock: socket context pointer |
| | | * return value: <0: failure 0:ok |
| | | */ |
| | | int socket_connect(socket_ctx_t *sock) |
| | | { |
| | | int rv = 0; |
| | | int sockfd = 0; |
| | | char service[20]; |
| | | struct addrinfo hints, *rp; |
| | | struct addrinfo *res = NULL; |
| | | struct in_addr inaddr; |
| | | struct sockaddr_in addr; |
| | | int len = sizeof(addr); |
| | | |
| | | if( !sock ) |
| | | return -1; |
| | | |
| | | socket_term(sock); |
| | | |
| | | /*+--------------------------------------------------+ |
| | | *| use getaddrinfo() to do domain name translation | |
| | | *+--------------------------------------------------+*/ |
| | | |
| | | memset(&hints, 0, sizeof(struct addrinfo)); |
| | | hints.ai_family = AF_INET; /* Only support IPv4 */ |
| | | hints.ai_socktype = SOCK_STREAM; |
| | | hints.ai_protocol = IPPROTO_TCP; /* TCP protocol */ |
| | | |
| | | /* If $host is a valid IP address, then don't use name resolution */ |
| | | if( inet_aton(sock->host, &inaddr) ) |
| | | { |
| | | //log_info("%s is a valid IP address, don't use domain name resolution.\n", sock->host); |
| | | hints.ai_flags |= AI_NUMERICHOST; |
| | | } |
| | | |
| | | /* Obtain address(es) matching host/port */ |
| | | snprintf(service, sizeof(service), "%d", sock->port); |
| | | if( (rv=getaddrinfo(sock->host, service, &hints, &res)) ) |
| | | { |
| | | log_error("getaddrinfo() parser [%s:%s] failed: %s\n", sock->host, service, gai_strerror(rv)); |
| | | return -3; |
| | | } |
| | | |
| | | /* getaddrinfo() returns a list of address structures. Try each |
| | | address until we successfully connect or bind */ |
| | | for (rp=res; rp!=NULL; rp=rp->ai_next) |
| | | { |
| | | #if 0 |
| | | char ipaddr[INET_ADDRSTRLEN]; |
| | | struct sockaddr_in *sp = (struct sockaddr_in *) rp->ai_addr; |
| | | |
| | | /* print domain name translation result */ |
| | | memset( ipaddr, 0, sizeof(ipaddr) ); |
| | | if( inet_ntop(AF_INET, &sp->sin_addr, ipaddr, sizeof(ipaddr)) ) |
| | | { |
| | | log_info("domain name resolution [%s->%s]\n", sock->host, ipaddr); |
| | | } |
| | | #endif |
| | | |
| | | /* Create the socket */ |
| | | sockfd = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol); |
| | | if( sockfd < 0) |
| | | { |
| | | log_error("socket() create failed: %s\n", strerror(errno)); |
| | | rv = -3; |
| | | continue; |
| | | } |
| | | |
| | | /* connect to server */ |
| | | rv = connect(sockfd, rp->ai_addr, len); |
| | | if( 0 == rv ) |
| | | { |
| | | sock->fd = sockfd; |
| | | log_info("Connect to server[%s:%d] on fd[%d] successfully!\n", sock->host, sock->port, sockfd); |
| | | break; |
| | | } |
| | | else |
| | | { |
| | | /* socket connect get error, try another IP address */ |
| | | close(sockfd); |
| | | continue; |
| | | } |
| | | } |
| | | |
| | | freeaddrinfo(res); |
| | | return rv; |
| | | } |
| | | |
| | | /* description: send data from the socket |
| | | * input args: |
| | | * $sock : socket context pointer |
| | | * $data : socket send data |
| | | * $bytes: socket send data bytes |
| | | * return value: <0: failure 0:ok |
| | | */ |
| | | int socket_send(socket_ctx_t *sock, char *data, int bytes) |
| | | { |
| | | int rv = 0; |
| | | int i = 0; |
| | | int left_bytes = bytes; |
| | | |
| | | if( !sock || !data || bytes<= 0 ) |
| | | return -1; |
| | | |
| | | while( left_bytes > 0 ) |
| | | { |
| | | rv=write(sock->fd, &data[i], left_bytes); |
| | | if( rv < 0 ) |
| | | { |
| | | log_info("socket[%d] write() failure: %s, close socket now\n", sock->fd, strerror(errno)); |
| | | socket_term(sock); |
| | | return -2; |
| | | } |
| | | else if( rv == left_bytes ) |
| | | { |
| | | log_info("socket send %d bytes data over\n", bytes); |
| | | return 0; |
| | | } |
| | | else |
| | | { |
| | | /* not send over this time, continue to send left data */ |
| | | i += rv; |
| | | left_bytes -= rv; |
| | | continue; |
| | | } |
| | | } |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | /* description: receive data from the socket |
| | | * input args: |
| | | * $sock : socket context pointer |
| | | * $buf : socket receive data buffer |
| | | * $size : socket receive data buffer size |
| | | * $timeout: receive data time, <=0 will don't timeout |
| | | * return value: <0: failure 0:ok |
| | | */ |
| | | int socket_recv(socket_ctx_t *sock, char *buf, int size, int timeout) |
| | | { |
| | | int rv = 0; |
| | | fd_set rdset; |
| | | int maxfd; |
| | | |
| | | if( !sock || !buf || size<= 0 ) |
| | | return -1; |
| | | |
| | | memset(buf, 0, size); |
| | | |
| | | maxfd = sock->fd; |
| | | FD_ZERO(&rdset); |
| | | FD_SET(sock->fd, &rdset); |
| | | |
| | | if( timeout <= 0 ) /* no timeout */ |
| | | { |
| | | rv=select(maxfd+1, &rdset, NULL, NULL, NULL); |
| | | } |
| | | else |
| | | { |
| | | struct timeval tv; |
| | | tv.tv_sec = timeout; |
| | | tv.tv_usec = 0; |
| | | rv=select(maxfd+1, &rdset, NULL, NULL, &tv); |
| | | } |
| | | |
| | | if( rv < 0 ) |
| | | { |
| | | log_error("select() on socket[%d] got error: %s\n", sock->fd, strerror(errno)); |
| | | return -2; |
| | | } |
| | | else if( rv == 0 ) |
| | | { |
| | | log_error("select() on socket[%d] get timeout\n", sock->fd); |
| | | return 0; |
| | | } |
| | | else |
| | | { |
| | | rv = read(sock->fd, buf, size); |
| | | if( rv <= 0 ) |
| | | { |
| | | log_error("socket[%d] read() failure or got disconnected: %s, close socket now\n", sock->fd, strerror(errno)); |
| | | socket_term(sock); |
| | | return -2; |
| | | } |
| | | else |
| | | { |
| | | log_debug("socket[%d] receive %d bytes data\n", sock->fd, rv); |
| | | return rv; |
| | | } |
| | | } |
| | | } |
| | | |
| | | |
| | | |
| | | /*+-------------------------------------------------------------------+ |
| | | *| socket utils function | |
| | | *+-------------------------------------------------------------------+*/ |
| | | |
| | | |
| | | /* socket connected or not: <0: failure 0:ok */ |
| | | int sock_check_connect(int sockfd) |
| | | { |
| | | struct tcp_info info; |
| | | int len=sizeof(info); |
| | | |
| | | if( sockfd < 0 ) |
| | | return -1; |
| | | |
| | | getsockopt(sockfd, IPPROTO_TCP, TCP_INFO, &info, (socklen_t *)&len); |
| | | |
| | | if( TCP_CLOSE==info.tcpi_state || TCP_CLOSING==info.tcpi_state || TCP_CLOSE_WAIT==info.tcpi_state ) |
| | | { |
| | | return -3; |
| | | } |
| | | |
| | | return -0; |
| | | } |
| | | |
| | | /* description: set socket listen port as reusable, fix port already used bug */ |
| | | int socket_set_reuseaddr(int sockfd) |
| | | { |
| | | int opt = 1; |
| | | int len = sizeof (int); |
| | | |
| | | if (setsockopt (sockfd, SOL_SOCKET, SO_REUSEADDR, (void *) &opt, len)) |
| | | { |
| | | log_error("Set socket[%d] option SO_REUSEADDR failed:%s\n", sockfd, strerror(errno)); |
| | | return -1; |
| | | } |
| | | log_debug("Set socket[%d] option SO_REUSEADDR ok\n", sockfd); |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | /* set socket as non-block mode, common socket default work as block mode */ |
| | | int socket_set_nonblock(int sockfd) |
| | | { |
| | | int opts; |
| | | /* |
| | | * fcntl may set: |
| | | * |
| | | * EACCES, EAGAIN: Operation is prohibited by locks held by other |
| | | * processes. Or, operation is prohibited because the file has |
| | | * been memory-mapped by another process. |
| | | * EBADF: fd is not an open file descriptor, or the command was F_SETLK |
| | | * or F_SETLKW and the file descriptor open mode doesn't match |
| | | * with the type of lock requested. |
| | | * EDEADLK: It was detected that the specified F_SETLKW command would |
| | | * cause a deadlock. |
| | | * EFAULT: lock is outside your accessible address space. |
| | | * EINTR: For F_SETLKW, the command was interrupted by a signal. For |
| | | * F_GETLK and F_SETLK, the command was interrupted by a signal |
| | | * before the lock was checked or acquired. Most likely when |
| | | * locking a remote file (e.g. locking over NFS), but can |
| | | * sometimes happen locally. |
| | | * EINVAL: For F_DUPFD, arg is negative or is greater than the maximum |
| | | * allowable value. For F_SETSIG, arg is not an allowable signal |
| | | * number. |
| | | * EMFILE: For F_DUPFD, the process already has the maximum number of |
| | | * file descriptors open. |
| | | * ENOLCK: Too many segment locks open, lock table is full, or a remote |
| | | * locking protocol failed (e.g. locking over NFS). |
| | | * EPERM: Attempted to clear the O_APPEND flag on a file that has the |
| | | * append-only attribute set. |
| | | */ |
| | | opts = fcntl(sockfd, F_GETFL); |
| | | if (opts < 0) |
| | | { |
| | | log_warn("fcntl() get socket options failure: %s\n", strerror(errno)); |
| | | return -1; |
| | | } |
| | | |
| | | opts |= O_NONBLOCK; |
| | | |
| | | if (fcntl(sockfd, F_SETFL, opts) < 0) |
| | | { |
| | | log_warn("fcntl() set socket options failure: %s\n", strerror(errno)); |
| | | return -1; |
| | | } |
| | | |
| | | log_debug("Set socket[%d] none blocking\n", sockfd); |
| | | return opts; |
| | | } |
| | | |
| | | |
| | | /* set socket receive and send buffer size in linux kernel space */ |
| | | int socket_set_buffer(int sockfd, int rsize, int ssize) |
| | | { |
| | | int opt; |
| | | socklen_t optlen = sizeof(opt); |
| | | |
| | | if(sockfd < 0) |
| | | return -1; |
| | | |
| | | /* Get system default receive buffer size, Linux X86: 85K */ |
| | | if (getsockopt (sockfd, SOL_SOCKET, SO_RCVBUF, (char *) &opt, &optlen)) |
| | | { |
| | | log_warn("getsockopt() get receive buffer failure: %s\n", strerror(errno)); |
| | | return -2; |
| | | } |
| | | |
| | | /* Only when current receive buffer size larger than the default one will change it */ |
| | | if(rsize > opt) |
| | | { |
| | | opt = (int) rsize; |
| | | if (setsockopt (sockfd, SOL_SOCKET, SO_RCVBUF, (char *) &opt, optlen)) |
| | | { |
| | | log_warn("setsockopt() set receive buffer to %d failure: %s\n", opt, strerror(errno)); |
| | | return -2; |
| | | } |
| | | } |
| | | |
| | | /* Get system default send buffer size, Linux X86: 16K */ |
| | | if (getsockopt (sockfd, SOL_SOCKET, SO_SNDBUF, (char *) &opt, &optlen)) |
| | | { |
| | | log_warn("getsockopt() get send buffer failure: %s\n", strerror(errno)); |
| | | return -3; |
| | | } |
| | | |
| | | /* Only when current receive buffer size larger than the default one will change it */ |
| | | if(ssize > opt) |
| | | { |
| | | opt = (int) ssize; |
| | | if (setsockopt (sockfd, SOL_SOCKET, SO_SNDBUF, (char *) &opt, optlen)) |
| | | { |
| | | log_warn("setsockopt() set send buffer to %d failure: %s\n", opt, strerror(errno)); |
| | | return -3; |
| | | } |
| | | } |
| | | |
| | | log_info("Set socket[%d] RCVBUF size:%d SNDBUF size:%d\n", sockfd, rsize, ssize); |
| | | return 0; |
| | | } |
| | | |
| | | /* |
| | | * Enable socket SO_KEEPALIVE, if the connection disconnected, any system call on socket |
| | | * will return immediately and errno will be set to "WSAENOTCONN" |
| | | * |
| | | * keepalive is not program related, but socket related, * so if you have multiple sockets, |
| | | * you can handle keepalive for each of them separately. |
| | | * |
| | | * Reference: http://tldp.org/HOWTO/html_single/TCP-Keepalive-HOWTO/ |
| | | */ |
| | | int socket_set_keepalive(int sockfd, int keepintvl, int keepcnt) |
| | | { |
| | | int opt; |
| | | |
| | | if(sockfd < 0) |
| | | return -1; |
| | | |
| | | /* Enable the KEEPALIVE flag */ |
| | | opt = 1; |
| | | if (setsockopt (sockfd, SOL_SOCKET, SO_KEEPALIVE, (char *) &opt, sizeof (opt))) |
| | | { |
| | | log_warn("setsockopt() enable SO_KEEPALIVE failure: %s\n", strerror(errno)); |
| | | return -2; |
| | | } |
| | | |
| | | if(keepintvl || keepcnt) |
| | | { |
| | | /* |
| | | * The tcp_keepidle parameter specifies the interval between the last data packet sent |
| | | * (simple ACKs are not considered data) and the first keepalive probe; after the |
| | | * connection is marked to need keepalive, this counter is not used any further. |
| | | * ~ >: cat /proc/sys/net/ipv4/tcp_keepalive_time |
| | | * 7200 |
| | | */ |
| | | opt = 3; /* 3 seconds */ |
| | | if (setsockopt (sockfd, SOL_TCP, TCP_KEEPIDLE, (char *) &opt, sizeof (opt))) |
| | | { |
| | | log_error("setsockopt() set TCP_KEEPIDLE to %d seconds failure: %s\n", opt, strerror(errno)); |
| | | return -3; |
| | | } |
| | | |
| | | if((opt=keepintvl) > 0) |
| | | { |
| | | /* |
| | | * The tcp_keepintvl parameter specifies the interval between subsequential keepalive |
| | | * probes, regardless of what the connection has exchanged in the meantime. |
| | | * ~ >: cat /proc/sys/net/ipv4/tcp_keepalive_intvl |
| | | * 75 |
| | | */ |
| | | if (setsockopt (sockfd, SOL_TCP, TCP_KEEPINTVL, (char *) &opt, sizeof (opt))) |
| | | { |
| | | log_error("setsockopt() set TCP_KEEPINTVL to %d failure: %s\n", opt, strerror(errno)); |
| | | return -4; |
| | | } |
| | | } |
| | | |
| | | if((opt=keepcnt) > 0) |
| | | { |
| | | /* |
| | | * The TCP_KEEPCNT option specifies the maximum number of unacknowledged probes to |
| | | * send before considering the connection dead and notifying the application layer |
| | | * probes to be sent. The value of TCP_KEEPCNT is an integer value between 1 and n, |
| | | * where n is the value of the systemwide tcp_keepcnt parameter. |
| | | * ~ >: cat /proc/sys/net/ipv4/tcp_keepalive_probes |
| | | * 9 |
| | | */ |
| | | if (setsockopt (sockfd, SOL_TCP, TCP_KEEPCNT, (char *) &opt, sizeof (opt))) |
| | | { |
| | | log_error("setsockopt() set TCP_KEEPCNT to %d failure: %s\n", opt, strerror(errno)); |
| | | return -5; |
| | | } |
| | | } |
| | | } |
| | | |
| | | log_debug("Set socket[%d] KEEPINTVL:%d KEEPCNT:%d\n", sockfd, keepintvl, keepcnt); |
| | | return 0; |
| | | } |
| | | |
| | | |
| | | /* Set open file description count to max */ |
| | | void set_socket_rlimit(void) |
| | | { |
| | | struct rlimit limit = {0}; |
| | | |
| | | getrlimit(RLIMIT_NOFILE, &limit ); |
| | | limit.rlim_cur = limit.rlim_max; |
| | | setrlimit(RLIMIT_NOFILE, &limit ); |
| | | |
| | | log_info("set socket open fd max count to %d\n", limit.rlim_max); |
| | | } |
| | | |
New file |
| | |
| | | /******************************************************************************** |
| | | * Copyright: (C) 2022 LingYun IoT System Studio |
| | | * All rights reserved. |
| | | * |
| | | * Filename: socket.h |
| | | * Description: This head file is for socket API functions |
| | | * |
| | | * Version: 1.0.0(18/04/22) |
| | | * Author: Guo Wenxue <guowenxue@gmail.com> |
| | | * ChangeLog: 1, Release initial version on "18/04/22 17:09:59" |
| | | * |
| | | ********************************************************************************/ |
| | | |
| | | #ifndef _SOCKET_H_ |
| | | #define _SOCKET_H_ |
| | | |
| | | #define HOSTNAME_LEN 64 |
| | | |
| | | typedef struct socket_ctx_s |
| | | { |
| | | char host[HOSTNAME_LEN]; /* CLIENT: Connect server hostname; SERVER: Unused */ |
| | | int port; /* CLIENT: Connect server port; SERVER: listen port */ |
| | | int fd; /* socket descriptor */ |
| | | } socket_ctx_t; |
| | | |
| | | /* description: initial socket context |
| | | * input args: |
| | | * $sock: socket context pointer |
| | | * $host: connect server hostname for client mode, unused for server mode |
| | | * $port: connect server port for client mode or listen port for server mode |
| | | * return value: <0: failure 0:ok |
| | | */ |
| | | extern int socket_init(socket_ctx_t *sock, char *host, int port); |
| | | |
| | | /* description: close socket |
| | | * input args: |
| | | * $sock: socket context pointer |
| | | * return value: <0: failure 0:ok |
| | | */ |
| | | extern int socket_term(socket_ctx_t *sock); |
| | | |
| | | /* description: socket server start listen |
| | | * input args: |
| | | * $sock: socket context pointer |
| | | * return value: <0: failure 0:ok |
| | | */ |
| | | extern int socket_listen(socket_ctx_t *sock); |
| | | |
| | | /* description: socket client connect to server |
| | | * input args: |
| | | * $sock: socket context pointer |
| | | * return value: <0: failure 0:ok |
| | | */ |
| | | extern int socket_connect(socket_ctx_t *sock); |
| | | |
| | | /* description: send data from the socket |
| | | * input args: |
| | | * $sock : socket context pointer |
| | | * $data : socket send data |
| | | * $bytes: socket send data bytes |
| | | * return value: <0: failure 0:ok |
| | | */ |
| | | extern int socket_send(socket_ctx_t *sock, char *data, int bytes); |
| | | |
| | | /* description: receive data from the socket |
| | | * input args: |
| | | * $sock : socket context pointer |
| | | * $buf : socket receive data buffer |
| | | * $size : socket receive data buffer size |
| | | * $timeout: receive data time, <=0 will don't timeout |
| | | * return value: <0: failure 0:ok |
| | | */ |
| | | #define TIMEOUT_NONE 0 |
| | | extern int socket_recv(socket_ctx_t *sock, char *buf, int size, int timeout); |
| | | |
| | | /*+-------------------------------------------------------------------+ |
| | | *| socket utils function | |
| | | *+-------------------------------------------------------------------+*/ |
| | | |
| | | |
| | | /* socket connected or not: <0: failure 0:ok */ |
| | | extern int sock_check_connect(int sockfd); |
| | | |
| | | /* description: set socket listen port as reusable, fix port already used bug */ |
| | | extern int socket_set_reuseaddr(int sockfd); |
| | | |
| | | /* set socket as non-block mode, common socket default work as block mode */ |
| | | extern int socket_set_nonblock(int sockfd); |
| | | |
| | | /* set socket receive and send buffer size in linux kernel space */ |
| | | extern int socket_set_buffer(int sockfd, int rsize, int ssize); |
| | | |
| | | /* set heartbeat keepalive */ |
| | | extern int socket_set_keepalive(int sockfd, int keepintvl, int keepcnt); |
| | | |
| | | /* Set open file description count to max */ |
| | | extern void set_socket_rlimit(void); |
| | | |
| | | #endif /* ----- #ifndef _SOCKET_H_ ----- */ |
| | | |
| | |
| | | #******************************************************************************* |
| | | |
| | | PRJ_PATH=$(shell pwd) |
| | | APP_NAME = client |
| | | APP_NAME = sock_client |
| | | |
| | | BUILD_ARCH=$(shell uname -m) |
| | | ifneq ($(findstring $(BUILD_ARCH), "x86_64" "i386"),) |
| | |
| | | |
| | | # common CFLAGS for our source code |
| | | CFLAGS = -Wall -Wshadow -Wundef -Wmaybe-uninitialized -D_GNU_SOURCE |
| | | |
| | | # sub-directory need to entry and compile |
| | | SUBDIR=booster sqlite |
| | | |
| | | # sub-directory compiled to a library and need to link |
| | | SRCS=booster |
| | |
| | | CFLAGS+=-I ${PRJ_PATH}/sqlite/install/include |
| | | LDFLAGS+=-L ${PRJ_PATH}/sqlite/install/lib |
| | | LDFLAGS+=-lsqlite3 |
| | | |
| | | LDFLAGS+=-lpthread |
| | | |
| | | # sub-directory need to entry and compile |
| | | SUBDIR=${SRCS} sqlite |
| | | |
| | | all: entry subdir |
| | | ${CROSS_COMPILE}gcc ${CFLAGS} client.c -o client ${LDFLAGS} |
| | | ${CROSS_COMPILE}gcc ${CFLAGS} sock_client.c -o sock_client ${LDFLAGS} |
| | | |
| | | entry: |
| | | @echo "Building ${APP_NAME} on ${BUILD_ARCH}" |
| | | |
| | | subdir: |
| | | @for dir in ${SUBDIR} ; do if [ ! -e $${dir} ] ; then ln -s ../$${dir}; fi; done |
| | | @for dir in ${SUBDIR} ; do make -C $${dir} ; done |
| | | @for dir in ${SUBDIR} ; do make CFLAGS="${CFLAGS}" -C $${dir} ; done |
| | | |
| | | install: |
| | | cp ${APP_NAME} /tftp |
File was renamed from project/socketd/client.c |
| | |
| | | int daemon = 1; |
| | | int opt; |
| | | char *progname=NULL; |
| | | char *logfile="client.log"; |
| | | int loglevel=LOG_LEVEL_INFO; |
| | | int logsize=10; /* logfile size max to 10K */ |
| | | char *logfile="client.log"; |
| | | int loglevel=LOG_LEVEL_INFO; |
| | | int logsize=10; /* logfile size max to 10K */ |
| | | |
| | | struct option long_options[] = { |
| | | {"debug", no_argument, NULL, 'd'}, |
| | |
| | | { |
| | | case 'd': /* Set debug running */ |
| | | daemon = 0; |
| | | logfile="console"; |
| | | loglevel=LOG_LEVEL_DEBUG; |
| | | logfile="console"; |
| | | loglevel=LOG_LEVEL_DEBUG; |
| | | break; |
| | | |
| | | case 'v': /* Get software version */ |
| | |
| | | |
| | | } |
| | | |
| | | if( log_open(logfile, loglevel, logsize, THREAD_LOCK_NONE) < 0 ) |
| | | { |
| | | fprintf(stderr, "Initial log system failed\n"); |
| | | return 1; |
| | | } |
| | | if( log_open(logfile, loglevel, logsize, THREAD_LOCK_NONE) < 0 ) |
| | | { |
| | | fprintf(stderr, "Initial log system failed\n"); |
| | | return 1; |
| | | } |
| | | |
| | | install_default_signal(); |
| | | |
| | |
| | | |
| | | cleanup: |
| | | log_close(); |
| | | unlink(DAEMON_PIDFILE); |
| | | |
| | | return 0; |
| | | } |