💾 Archived View for gmi.noulin.net › gitRepositories › spartserv › file › spartclient.c.gmi captured on 2023-07-10 at 15:39:10. Gemini links have been rewritten to link to archived content
⬅️ Previous capture (2023-01-29)
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spartclient.c (2001B)
1 // Usage: spartclient hostname port path
2 #include <stdio.h>
3 #include <sys/types.h>
4 #include <sys/socket.h>
5 #include <netdb.h>
6 #include <netinet/in.h>
7 #include <string.h>
8 #include <stdlib.h>
9 #include <ctype.h>
10 #include <unistd.h>
11
12 int64_t parseInt(const char *string) {
13 while (!isdigit(*string) && *string != '-' && *string != 0) {
14 string++;
15 }
16 int64_t r = strtoll(string, NULL, 10);
17 return(r);
18 }
19
20 int main(int ac, char **av){
21 int sock;
22 struct sockaddr_in server;
23 struct hostent *hp;
24 int mysock;
25 char buf[8192] = {0};
26 int rval;
27 int i;
28
29 if (ac < 4) {
30 puts("Usage: spartclient hostname port path");
31 return 0;
32 }
33
34 sock = socket(AF_INET, SOCK_STREAM, 0);
35 if (sock < 0){
36 perror("Failed to create socket");
37 }
38
39 server.sin_family = AF_INET;
40
41 hp = gethostbyname(av[1]);
42 if (hp==0) {
43 perror("gethostbyname failed");
44 close(sock);
45 exit(1);
46 }
47
48 memcpy(&server.sin_addr, hp->h_addr, hp->h_length);
49
50 int64_t port = parseInt(av[2]);
51
52 if (port < 1 || port > 65000) {
53 printf("Invalid port %d.\n", port);
54 return 1;
55 }
56
57 server.sin_port = htons(port);
58
59 if (connect(sock,(struct sockaddr *) &server, sizeof(server))){
60 perror("connect failed");
61 close(sock);
62 exit(1);
63 }
64
65 // build request
66 size_t len = strlen(av[1]);
67 memcpy(buf, av[1], len);
68 buf[len] = ' ';
69 char *cursor = buf + len + 1;
70 len = strlen(av[3]);
71 memcpy(cursor, av[3], len);
72 memcpy(cursor + len, " 0\r\n", strlen(" 0\r\n"));
73 cursor += len + strlen(" 0\r\n");
74
75 // send request
76 if(send(sock, buf, cursor - buf, 0) < 0){
77 perror("send failed");
78 close(sock);
79 exit(1);
80 }
81
82 // reveice server response
83 rval = recv(sock, buf, sizeof(buf)-1 /* -1 to add end of string before printing */, 0);
84 if (rval != -1 && rval != 0) {
85 buf[rval] = 0;
86 puts(buf);
87 }
88
89 close(sock);
90 }
91