67 lines
2.2 KiB
C
67 lines
2.2 KiB
C
/*
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* This file is part of uIRCd. (https://git.redxen.eu/caskd/uIRCd)
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* Copyright (c) 2019, 2020 Alex-David Denes
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*
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* uIRCd is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* any later version.
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*
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* uIRCd is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with uIRCd. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "net.h"
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signed int init_conn(Connection* info)
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{
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int sockfd, getaddrres, connectres;
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if (info->data.addr == NULL) return INIT_HARDFAIL;
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struct addrinfo* conn;
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if ((getaddrres = getaddrinfo(info->data.addr, info->data.port, NULL, &conn)) != 0) {
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LOG(LOG_ERROR, "Failed to get address info for %s:%s. %s (%i)", info->data.addr, info->data.port, gai_strerror(getaddrres),
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getaddrres);
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freeaddrinfo(conn);
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if (getaddrres != EAI_AGAIN && getaddrres != EAI_NONAME) {
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return INIT_HARDFAIL;
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} else
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return INIT_SOFTFAIL;
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}
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if ((sockfd = socket(conn->ai_family, conn->ai_socktype, conn->ai_protocol)) < 0) {
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LOG(LOG_ERROR, "Failed to open a socket for " ADDRFMT ". " ERRNOFMT, info->data.addr, info->data.port, strerror(errno), errno);
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freeaddrinfo(conn);
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return INIT_HARDFAIL;
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}
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if ((connectres = connect(sockfd, conn->ai_addr, conn->ai_addrlen)) == -1) {
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LOG(LOG_ERROR, "Failed to connect to host " ADDRFMT ". " ERRNOFMT, info->data.addr, info->data.port, strerror(errno), errno);
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close(sockfd);
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freeaddrinfo(conn);
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if (errno != EADDRNOTAVAIL && errno != ETIMEDOUT && errno != ECONNRESET && errno != ECONNREFUSED) {
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return INIT_HARDFAIL;
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} else
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return INIT_SOFTFAIL;
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}
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freeaddrinfo(conn);
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return sockfd;
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}
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ssize_t flush_buffer(char* buf, size_t buflen, int fd)
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{
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ssize_t res;
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char* pos = buf;
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for (;;) {
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if ((size_t)(res = write(fd, pos, buflen - (size_t)(pos - buf))) != buflen - (size_t)(pos - buf)) {
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if (res == -1)
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return -1;
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else
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pos += res;
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} else
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return res;
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}
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}
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