| 1 |
#include <stdio.h> |
| 2 |
#include <sys/socket.h> |
| 3 |
#include <stdlib.h> |
| 4 |
#include <unistd.h> |
| 5 |
#include <syslog.h> |
| 6 |
#include <netinet/in.h> |
| 7 |
#include <ukcprog.h> |
| 8 |
#include <netdb.h> |
| 9 |
#include <strings.h> |
| 10 |
|
| 11 |
typedef struct{ |
| 12 |
int fm_port; |
| 13 |
char *fm_host; |
| 14 |
|
| 15 |
char *my_fqdn; |
| 16 |
char *server_fqdn; |
| 17 |
int server_udp_port; |
| 18 |
int server_tcp_port; |
| 19 |
long last_modified; |
| 20 |
char *files_list; |
| 21 |
char *key; |
| 22 |
int udp_update_time; |
| 23 |
int tcp_update_time; |
| 24 |
|
| 25 |
}ihost_state_t; |
| 26 |
|
| 27 |
char* sock_comm(FILE *f_r, FILE *f_w, char* sendString){ |
| 28 |
char *reply; |
| 29 |
fprintf(f_w, "%s", sendString); |
| 30 |
fflush(f_w); |
| 31 |
reply=fpgetline(f_r); |
| 32 |
/* Returns pointer to static buffer */ |
| 33 |
return reply; |
| 34 |
} |
| 35 |
|
| 36 |
int ihost_configure(ihost_state_t *ihost_state){ |
| 37 |
struct sockaddr_in addr; |
| 38 |
struct in_addr haddr; |
| 39 |
int sd; |
| 40 |
FILE *fm_fd_r, *fm_fd_w; |
| 41 |
char *reply; |
| 42 |
char *reply_ptr; |
| 43 |
|
| 44 |
if ((sd = socket(AF_INET, SOCK_STREAM, PF_UNSPEC)) < 0) { |
| 45 |
errf("Can't create AF_INET socket (%m)"); |
| 46 |
return -1; |
| 47 |
} |
| 48 |
|
| 49 |
if (get_host_addr(ihost_state->fm_host, &haddr) != 0){ |
| 50 |
errf("Failed to resolve address %s (%m)", ihost_state->fm_host); |
| 51 |
return -1; |
| 52 |
} |
| 53 |
|
| 54 |
memset((char *)&addr, 0, sizeof addr); |
| 55 |
addr.sin_family = AF_INET; |
| 56 |
memcpy((char *)&addr.sin_addr, &haddr, sizeof haddr); |
| 57 |
addr.sin_port = htons(ihost_state->fm_port); |
| 58 |
|
| 59 |
if (connect(sd, (struct sockaddr *)&addr, sizeof addr) != 0) { |
| 60 |
errf("Failed to connect to %s on port %d (%m)", ihost_state->fm_host, ihost_state->fm_port); |
| 61 |
return -1; |
| 62 |
} |
| 63 |
|
| 64 |
/* Need to open 2 files, one for reading one for writing, as it gets confused if we only use 1 :) */ |
| 65 |
if ((fm_fd_r=fdopen(sd,"r")) == NULL){ |
| 66 |
errf("Failed to open stream (%m)"); |
| 67 |
return -1; |
| 68 |
} |
| 69 |
|
| 70 |
if ((fm_fd_w=fdopen(dup(sd),"w")) == NULL){ |
| 71 |
errf("Failed to open stream (%m)"); |
| 72 |
return -1; |
| 73 |
} |
| 74 |
|
| 75 |
reply=sock_comm(fm_fd_r, fm_fd_w, "STARTCONFIG\n"); |
| 76 |
if ((reply==NULL) || (strncasecmp(reply, "OK", 2) != 0) ) { |
| 77 |
errf("Server error"); |
| 78 |
return -1; |
| 79 |
} |
| 80 |
|
| 81 |
reply=sock_comm(fm_fd_r, fm_fd_w, "LASTMODIFIED\n"); |
| 82 |
if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0)){ |
| 83 |
errf("Server error (%m)"); |
| 84 |
return -1; |
| 85 |
} |
| 86 |
ihost_state->last_modified=atol(reply); |
| 87 |
|
| 88 |
reply=sock_comm(fm_fd_r, fm_fd_w, "FILELIST\n"); |
| 89 |
if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0)){ |
| 90 |
errf("Server error (%m)"); |
| 91 |
return -1; |
| 92 |
} |
| 93 |
if((ihost_state->files_list=strdup(reply)) == NULL){ |
| 94 |
errf("strdup failed (%m)"); |
| 95 |
return -1; |
| 96 |
} |
| 97 |
|
| 98 |
reply=sock_comm(fm_fd_r, fm_fd_w, "FQDN\n"); |
| 99 |
if((reply== NULL) || (strncasecmp(reply, "ERROR", 5)==0)){ |
| 100 |
errf("Server error (%m)"); |
| 101 |
return -1; |
| 102 |
} |
| 103 |
if((ihost_state->my_fqdn=strdup(reply)) == NULL){ |
| 104 |
errf("strdup failed (%m)"); |
| 105 |
return -1; |
| 106 |
} |
| 107 |
|
| 108 |
reply=sock_comm(fm_fd_r, fm_fd_w, "UDPUpdateTime\n"); |
| 109 |
if(reply== NULL){ |
| 110 |
errf("Server error (%m)"); |
| 111 |
return -1; |
| 112 |
} |
| 113 |
if (strncasecmp(reply, "ERROR", 5) != 0){ |
| 114 |
ihost_state->udp_update_time=atoi(reply); |
| 115 |
} |
| 116 |
|
| 117 |
reply=sock_comm(fm_fd_r, fm_fd_w, "TCPUpdateTime\n"); |
| 118 |
if(reply== NULL){ |
| 119 |
errf("Server error (%m)"); |
| 120 |
return -1; |
| 121 |
} |
| 122 |
if (strncasecmp(reply, "ERROR", 5) != 0){ |
| 123 |
ihost_state->tcp_update_time=atoi(reply); |
| 124 |
} |
| 125 |
|
| 126 |
reply=sock_comm(fm_fd_r, fm_fd_w, "ENDCONFIG\n"); |
| 127 |
if(reply== NULL){ |
| 128 |
errf("Server error (%m)"); |
| 129 |
return -1; |
| 130 |
} |
| 131 |
|
| 132 |
reply=sock_comm(fm_fd_r, fm_fd_w, "FILTER\n"); |
| 133 |
if((reply== NULL) || (strncasecmp(reply, "ERROR", 5)==0)){ |
| 134 |
errf("Server error (%m)"); |
| 135 |
return -1; |
| 136 |
} |
| 137 |
reply_ptr=strchr(reply,';'); |
| 138 |
if (reply_ptr==NULL){ |
| 139 |
errf("Incorrect data returned"); |
| 140 |
return -1; |
| 141 |
} |
| 142 |
*reply_ptr='\0'; |
| 143 |
if((ihost_state->server_fqdn=strdup(reply)) == NULL){ |
| 144 |
errf("strdup failed (%m)"); |
| 145 |
return -1; |
| 146 |
} |
| 147 |
reply=++reply_ptr; |
| 148 |
reply_ptr=strchr(reply,';'); |
| 149 |
if (reply_ptr==NULL){ |
| 150 |
errf("Incorrect data returned 2"); |
| 151 |
return -1; |
| 152 |
} |
| 153 |
*reply_ptr='\0'; |
| 154 |
ihost_state->server_udp_port=atoi(reply); |
| 155 |
reply=++reply_ptr; |
| 156 |
ihost_state->server_tcp_port=atoi(reply); |
| 157 |
if ((ihost_state->server_tcp_port==0) || (ihost_state->server_udp_port==0)){ |
| 158 |
errf("Incorrect data returned 3 "); |
| 159 |
return -1; |
| 160 |
} |
| 161 |
|
| 162 |
reply=sock_comm(fm_fd_r, fm_fd_w, "END\n"); |
| 163 |
if((reply== NULL) || (strncasecmp(reply, "ERROR", 5) ==0 )){ |
| 164 |
errf("Server error (%m)"); |
| 165 |
return -1; |
| 166 |
} |
| 167 |
|
| 168 |
if(fclose(fm_fd_r) !=0){ |
| 169 |
errf("Failed to close FD (%m)"); |
| 170 |
return -1; |
| 171 |
} |
| 172 |
if(fclose(fm_fd_w) !=0){ |
| 173 |
errf("Failed to close FD (%m)"); |
| 174 |
return -1; |
| 175 |
} |
| 176 |
|
| 177 |
return 0; |
| 178 |
|
| 179 |
} |
| 180 |
|
| 181 |
int main(){ |
| 182 |
ihost_state_t ihost_state; |
| 183 |
|
| 184 |
ihost_state.fm_host=strdup("kernow.ukc.ac.uk"); |
| 185 |
ihost_state.fm_port=4567; |
| 186 |
|
| 187 |
if(ihost_configure(&ihost_state)!=0){ |
| 188 |
errf("configure failed"); |
| 189 |
} |
| 190 |
|
| 191 |
return 0; |
| 192 |
} |
| 193 |
|
