Mercurial > hg > nnchat
view libnnchat.c @ 73:c56e766acce1
Support keycode 0x08 as backspace for Win32 compatibility.
author | Matti Hamalainen <ccr@tnsp.org> |
---|---|
date | Fri, 14 Nov 2008 09:31:08 +0200 |
parents | fe5fc76c0806 |
children | 745f670068dc |
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/* * NNChat - Custom chat client for NewbieNudes.com chatrooms * Written by Matti 'ccr' Hämäläinen * (C) Copyright 2008 Tecnic Software productions (TNSP) */ #include "libnnchat.h" typedef struct { char c; char *ent; } html_entity_t; html_entity_t HTMLEntities[] = { { '<', "<" }, { '>', ">" }, }; const int numHTMLEntities = (sizeof(HTMLEntities) / sizeof(HTMLEntities[0])); int openConnection(struct in_addr *addr, const int port) { struct sockaddr_in tmpAddr; int sock = -1; tmpAddr.sin_family = AF_INET; tmpAddr.sin_port = htons(port); tmpAddr.sin_addr = *addr; THMSG(1, "Connecting to %s:%d ...\n", inet_ntoa(tmpAddr.sin_addr), port); if ((sock = socket(PF_INET, SOCK_STREAM, 0)) == -1) { THERR("Could not open socket: %s\n", strerror(errno)); return -2; } THMSG(2, "Using socket %d.\n", sock); if (connect(sock, (struct sockaddr *) &tmpAddr, sizeof(tmpAddr)) == -1) { THERR("Could not connect: %s\n", strerror(errno)); return -5; } return sock; } void closeConnection(const int sock) { if (sock >= 0) { #ifdef __WIN32 closesocket(sock); #else close(sock); #endif } } BOOL sendToSocket(const int sock, char *buf, const size_t bufLen) { size_t bufLeft = bufLen; char *bufPtr = buf; while (bufLeft > 0) { ssize_t bufSent; bufSent = send(sock, bufPtr, bufLeft, 0); if (bufSent < 0) return FALSE; bufLeft -= bufSent; bufPtr += bufSent; } return TRUE; } BOOL bufRealloc(char **buf, size_t *size, size_t add) { return ((*buf = th_realloc(*buf, *size + add)) != NULL); } #define PUSHCHAR(x) bufPushChar(&result, &resSize, &resPos, x) BOOL bufPushChar(char **buf, size_t *size, size_t *pos, char ch) { if (*pos >= *size && !bufRealloc(buf, size, SET_ALLOC_SIZE)) return FALSE; (*buf)[*pos] = ch; (*pos)++; return TRUE; } #define PUSHSTR(x) bufPushStr(&result, &resSize, &resPos, x) BOOL bufPushStr(char **buf, size_t *size, size_t *pos, char *str) { size_t tmpLen; if (!str) return FALSE; tmpLen = strlen(str); if ((*pos + tmpLen) >= *size && !bufRealloc(buf, size, tmpLen + SET_ALLOC_SIZE)) return FALSE; strcpy(*buf + *pos, str); (*pos) += tmpLen; return TRUE; } char *encodeStr1(const char *str) { const char *s = str; char *result; size_t resSize, resPos = 0; if (!str) return NULL; resSize = strlen(str) + SET_ALLOC_SIZE; if ((result = th_malloc(resSize)) == NULL) return NULL; while (*s) { switch (*s) { case 32: PUSHCHAR('+'); break; default: if (th_isalnum(*s)) PUSHCHAR(*s); else { char tmpStr[4]; sprintf(tmpStr, "%2X", (unsigned char) *s); PUSHCHAR('%'); PUSHSTR(tmpStr); } break; } s++; } PUSHCHAR(0); return result; } static int getHexDigit(const int c, const int shift) { int i; if (c >= 'A' && c <= 'F') i = c - 'A' + 10; else if (c >= 'a' && c <= 'f') i = c - 'a' + 10; else if (c >= '0' && c <= '9') i = c - '0'; else return -1; return i << shift; } char *decodeStr1(const char *str) { const char *s = str; char *result; size_t resSize, resPos = 0; int c; if (!str) return NULL; resSize = strlen(str) + SET_ALLOC_SIZE; if ((result = th_malloc(resSize)) == NULL) return NULL; while (*s) { switch (*s) { case '+': PUSHCHAR(' '); s++; break; case '½': /* Escape these .. */ PUSHCHAR('½'); PUSHCHAR('½'); s++; break; case '\r': PUSHCHAR(' '); s++; break; case '%': s++; if (*s == '%') PUSHCHAR('%'); else if ((c = getHexDigit(*s, 4)) >= 0) { int i = getHexDigit(*(++s), 0); if (i >= 0) { PUSHCHAR(c | i); } else { PUSHCHAR('§'); PUSHCHAR(*s); } } else { PUSHCHAR('§'); PUSHCHAR(*s); } s++; break; default: PUSHCHAR(*s); s++; } } PUSHCHAR(0); return result; } char *stripXMLTags(const char *str) { const char *s = str; char *result; size_t resSize, resPos = 0; if (!str) return NULL; resSize = strlen(str) + SET_ALLOC_SIZE; if ((result = th_malloc(resSize)) == NULL) return NULL; while (*s) { if (*s == '<') { while (*s && *s != '>') s++; if (*s == '>') s++; } else PUSHCHAR(*s++); } PUSHCHAR(0); return result; } char *encodeStr2(const char *str) { const char *s = str; char *result; size_t resSize, resPos = 0; if (!str) return NULL; resSize = strlen(str) + SET_ALLOC_SIZE; if ((result = th_malloc(resSize)) == NULL) return NULL; while (*s) { int i; BOOL found = FALSE; for (i = 0; i < numHTMLEntities; i++) if (HTMLEntities[i].c == *s) { PUSHSTR(HTMLEntities[i].ent); found = TRUE; break; } if (!found) PUSHCHAR(*s); s++; } PUSHCHAR(0); return result; } char *decodeStr2(const char *str) { const char *s = str; char *result; size_t resSize, resPos = 0; if (!str) return NULL; resSize = strlen(str); if ((result = th_malloc(resSize)) == NULL) return NULL; while (*s) { if (*s == '&') { int i; BOOL found = FALSE; for (i = 0; i < numHTMLEntities; i++) { html_entity_t *ent = &HTMLEntities[i]; int len = strlen(ent->ent); if (!strncmp(s, ent->ent, len)) { PUSHCHAR(ent->c); s += len; found = TRUE; break; } } if (!found) PUSHCHAR(*s++); } else PUSHCHAR(*s++); } PUSHCHAR(0); return result; } BOOL sendUserMsg(const int sock, const char *user, const char *fmt, ...) { char tmpBuf[SET_BUFSIZE], tmpBuf2[SET_BUFSIZE + 256]; int n; va_list ap; va_start(ap, fmt); n = vsnprintf(tmpBuf, sizeof(tmpBuf), fmt, ap); va_end(ap); if (n < 0) return FALSE; snprintf(tmpBuf2, sizeof(tmpBuf2), "<USER>%s</USER><MESSAGE>%s</MESSAGE>", user, tmpBuf); return sendToSocket(sock, tmpBuf2, strlen(tmpBuf2) + 1); } ringbuf_t * newRingBuf(const size_t size) { ringbuf_t *res = th_calloc(1, sizeof(ringbuf_t)); res->data = (char **) th_malloc(size * sizeof(char *)); res->size = size; res->n = 0; return res; } void freeRingBuf(ringbuf_t *buf) { size_t i; for (i = 0; i < buf->n; i++) th_free(buf->data[i]); th_free(buf->data); th_free(buf); } void addRingBuf(ringbuf_t *buf, const char *str) { if (buf->n < buf->size) { buf->data[buf->n] = strdup(str); buf->n++; } else { th_free(buf->data[0]); memmove(&(buf->data[0]), &(buf->data[1]), buf->size - 1); buf->data[buf->size - 1] = strdup(str); } } int writeBuf(editbuf_t *buf, ssize_t pos, int ch) { /* Check arguments */ if (buf->len+1 >= buf->size) return -3; if (pos < 0) return -1; else if (pos >= buf->len) { buf->data[buf->len++] = ch; } else { buf->data[pos] = ch; } return 0; } int insertBuf(editbuf_t *buf, ssize_t pos, int ch) { /* Check arguments */ if (buf->len+1 >= buf->size) return -3; if (pos < 0) return -1; else if (pos >= buf->len) { buf->data[buf->len] = ch; } else { memmove(&(buf->data[pos+1]), &(buf->data[pos]), buf->len - pos + 1); buf->data[pos] = ch; } buf->len++; return 0; } int deleteBuf(editbuf_t *buf, ssize_t pos) { /* Check arguments */ if (pos < 0) return -1; else if (pos < buf->len) { memmove(&(buf->data[pos]), &(buf->data[pos+1]), buf->len - pos); buf->len--; return 0; } else return -2; } void clearBuf(editbuf_t *buf) { buf->len = 0; buf->pos = 0; } editbuf_t * newBuf(ssize_t n) { editbuf_t *res = th_calloc(1, sizeof(editbuf_t)); res->data = (char *) th_malloc(n); res->size = n; return res; } void freeBuf(editbuf_t *buf) { if (buf) { th_free(buf->data); th_free(buf); } } editbuf_t * copyBuf(editbuf_t *src) { editbuf_t *res; assert(src != NULL); if (src == NULL) return NULL; if ((res = newBuf(src->size)) == NULL) return NULL; memcpy(res->data, src->data, src->size); res->pos = res->len = src->len; return res; } void setBufPos(editbuf_t *buf, ssize_t pos) { /* Check arguments */ if (pos < 0) buf->pos = 0; else if (pos >= buf->len) buf->pos = buf->len; else buf->pos = pos; }