mirror of
https://github.com/bol-van/zapret.git
synced 2024-09-22 09:42:51 +05:00
121 lines
2.5 KiB
C
121 lines
2.5 KiB
C
#define _GNU_SOURCE
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#include "helpers.h"
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <ctype.h>
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void hexdump_limited_dlog(const uint8_t *data, size_t size, size_t limit)
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{
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size_t k;
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bool bcut=false;
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if (size>limit)
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{
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size=limit;
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bcut = true;
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}
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if (!size) return;
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for (k=0;k<size;k++) DLOG("%02X ",data[k]);
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DLOG(bcut ? "... : " : ": ");
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for (k=0;k<size;k++) DLOG("%c",data[k]>=0x20 && data[k]<=0x7F ? (char)data[k] : '.');
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if (bcut) DLOG(" ...");
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}
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char *strncasestr(const char *s,const char *find, size_t slen)
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{
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char c, sc;
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size_t len;
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if ((c = *find++) != '\0')
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{
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len = strlen(find);
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do
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{
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do
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{
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if (slen-- < 1 || (sc = *s++) == '\0') return NULL;
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} while (toupper(c) != toupper(sc));
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if (len > slen) return NULL;
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} while (strncasecmp(s, find, len) != 0);
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s--;
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}
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return (char *)s;
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}
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bool load_file(const char *filename,void *buffer,size_t *buffer_size)
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{
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FILE *F;
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F = fopen(filename,"rb");
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if (!F) return false;
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*buffer_size = fread(buffer,1,*buffer_size,F);
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if (ferror(F))
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{
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fclose(F);
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return false;
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}
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fclose(F);
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return true;
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}
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bool load_file_nonempty(const char *filename,void *buffer,size_t *buffer_size)
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{
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bool b = load_file(filename,buffer,buffer_size);
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return b && *buffer_size;
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}
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void print_sockaddr(const struct sockaddr *sa)
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{
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char str[64];
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switch (sa->sa_family)
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{
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case AF_INET:
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if (inet_ntop(sa->sa_family, &((struct sockaddr_in*)sa)->sin_addr, str, sizeof(str)))
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printf("%s:%d", str, ntohs(((struct sockaddr_in*)sa)->sin_port));
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break;
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case AF_INET6:
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if (inet_ntop(sa->sa_family, &((struct sockaddr_in6*)sa)->sin6_addr, str, sizeof(str)))
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printf("[%s]:%d", str, ntohs(((struct sockaddr_in6*)sa)->sin6_port));
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break;
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default:
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printf("UNKNOWN_FAMILY_%d", sa->sa_family);
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}
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}
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void dbgprint_socket_buffers(int fd)
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{
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if (params.debug)
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{
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int v;
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socklen_t sz;
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sz=sizeof(int);
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if (!getsockopt(fd,SOL_SOCKET,SO_RCVBUF,&v,&sz))
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DLOG("fd=%d SO_RCVBUF=%d\n",fd,v)
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sz=sizeof(int);
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if (!getsockopt(fd,SOL_SOCKET,SO_SNDBUF,&v,&sz))
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DLOG("fd=%d SO_SNDBUF=%d\n",fd,v)
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}
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}
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bool set_socket_buffers(int fd, int rcvbuf, int sndbuf)
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{
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DLOG("set_socket_buffers fd=%d rcvbuf=%d sndbuf=%d\n",fd,rcvbuf,sndbuf)
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if (rcvbuf && setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &rcvbuf, sizeof(int)) <0)
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{
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perror("setsockopt (SO_RCVBUF): ");
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close(fd);
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return false;
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}
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if (sndbuf && setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &sndbuf, sizeof(int)) <0)
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{
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perror("setsockopt (SO_SNDBUF): ");
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close(fd);
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return false;
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}
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dbgprint_socket_buffers(fd);
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return true;
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}
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