mirror of
https://github.com/xcat2/confluent.git
synced 2024-11-27 12:00:10 +00:00
252 lines
8.5 KiB
C
252 lines
8.5 KiB
C
/* Copyright 2019-2021 Lenovo */
|
|
|
|
#include "sha-256.h"
|
|
#include <arpa/inet.h>
|
|
#include <crypt.h>
|
|
#include <net/if.h>
|
|
#include <netdb.h>
|
|
#include <sys/socket.h>
|
|
#include <stdio.h>
|
|
#include <sys/ioctl.h>
|
|
#include <sys/types.h>
|
|
#include <sys/time.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#define MAXPACKET 1024
|
|
|
|
static const char cryptalpha[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789./";
|
|
static const char b64alpha[] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
|
|
|
|
unsigned char* genpasswd(int len) {
|
|
unsigned char * passwd;
|
|
int urandom, ret;
|
|
passwd = calloc(len + 1, sizeof(char));
|
|
urandom = open("/dev/urandom", O_RDONLY);
|
|
if (urandom < 0) {
|
|
fprintf(stderr, "Failed reading /dev/urandom\n");
|
|
exit(1);
|
|
}
|
|
ret = read(urandom, passwd, len);
|
|
close(urandom);
|
|
for (urandom = 0; urandom < len; urandom++) {
|
|
passwd[urandom] = cryptalpha[passwd[urandom] >> 2];
|
|
}
|
|
passwd[len] = 0; // Should be redundant with calloc, but be explicit
|
|
return passwd;
|
|
|
|
}
|
|
|
|
char * b64e(uint8_t * data, uint32_t datalen) {
|
|
uint8_t * currptr;
|
|
uint8_t * currout;
|
|
uint8_t currchunk[4];
|
|
uint8_t * retval;
|
|
uint32_t neededlen;
|
|
int32_t remaining = datalen;
|
|
neededlen = (datalen - 1) / 3 * 4 + 4;
|
|
retval = malloc(neededlen + 1);
|
|
currout = retval;
|
|
currptr = data;
|
|
currchunk[3] = 0;
|
|
while (remaining > 0) {
|
|
currchunk[0] = currptr[0];
|
|
currchunk[1] = remaining > 1 ? currptr[1] : 0;
|
|
currchunk[2] = remaining > 2 ? currptr[2] : 0;
|
|
currptr += 3;
|
|
currout[0] = b64alpha[currchunk[0] >> 2];
|
|
currout[1] = b64alpha[(currchunk[0] << 4 | currchunk[1] >> 4) & 0x3f];
|
|
currout[2] = remaining > 1 ? b64alpha[(currchunk[1] << 2 | currchunk[2] >> 6) & 0x3f] : '=';
|
|
currout[3] = remaining > 2 ? b64alpha[currchunk[2] & 0x3f] : '=';
|
|
remaining -= 3;
|
|
currout += 4;
|
|
}
|
|
retval[neededlen] = 0;
|
|
return retval;
|
|
}
|
|
|
|
int getpasshmac(int argc, char* argv[]) {
|
|
FILE *outfile;
|
|
uint8_t *passwd;
|
|
uint8_t *buffer;
|
|
uint8_t *tmps;
|
|
uint8_t *cryptpass;
|
|
uint8_t hmac[32];
|
|
uint8_t *hmac64;
|
|
uint8_t hmackey[64];
|
|
int hmackeysize;
|
|
if (argc < 5) {
|
|
fprintf(stderr, "Usage: %s passfile cryptfile hmacfile hmackey\n", argv[0]);
|
|
exit(1);
|
|
}
|
|
outfile = fopen(argv[4], "r");
|
|
hmackeysize = fread(hmackey, 1, 64, outfile);
|
|
fclose(outfile);
|
|
passwd = genpasswd(48);
|
|
outfile = fopen(argv[1], "w");
|
|
buffer = malloc(20);
|
|
tmps = genpasswd(16);
|
|
memcpy(buffer, "$5$", 3);
|
|
memcpy(buffer + 3, tmps, 16);
|
|
free(tmps);
|
|
buffer[19] = 0;
|
|
fwrite(passwd, 1, 48, outfile);
|
|
fclose(outfile);
|
|
cryptpass = crypt(passwd, buffer);
|
|
outfile = fopen(argv[2], "w");
|
|
fwrite(cryptpass, 1, strlen(cryptpass), outfile);
|
|
fclose(outfile);
|
|
hmac_sha256(hmac, cryptpass, strlen(cryptpass), hmackey, hmackeysize);
|
|
hmac64 = b64e(hmac, 32);
|
|
outfile = fopen(argv[3], "w");
|
|
fwrite(hmac64, 1, strlen(hmac64), outfile);
|
|
fclose(outfile);
|
|
free(hmac64);
|
|
free(passwd);
|
|
free(buffer);
|
|
return 0;
|
|
}
|
|
|
|
int main(int argc, char* argv[]) {
|
|
int sock, ret;
|
|
char slen;
|
|
unsigned char currtype;
|
|
size_t currlen;
|
|
unsigned char* passwd;
|
|
unsigned char* cryptedpass;
|
|
unsigned char* macaddr;
|
|
struct timeval timeout;
|
|
struct addrinfo hints;
|
|
struct addrinfo *addrs;
|
|
struct addrinfo *curr;
|
|
struct sockaddr_in net4bind;
|
|
struct sockaddr_in6 net6bind;
|
|
FILE *hmackeyfile;
|
|
uint8_t hmackey[64];
|
|
uint8_t hmac[32];
|
|
int hmackeysize = 0;
|
|
unsigned char buffer[MAXPACKET];
|
|
memset(&hints, 0, sizeof(struct addrinfo));
|
|
memset(&net4bind, 0, sizeof(struct sockaddr_in));
|
|
memset(&net6bind, 0, sizeof(struct sockaddr_in6));
|
|
memset(&buffer, 0, MAXPACKET);
|
|
memset(&timeout, 0, sizeof(struct timeval));
|
|
if (strstr(argv[0], "genpasshmac") != NULL) {
|
|
return getpasshmac(argc, argv);
|
|
}
|
|
timeout.tv_sec = 10;
|
|
net4bind.sin_port = htons(302);
|
|
net4bind.sin_family = AF_INET;
|
|
net6bind.sin6_port = htons(302);
|
|
net6bind.sin6_family = AF_INET6;
|
|
hints.ai_socktype = SOCK_STREAM;
|
|
hints.ai_protocol = IPPROTO_TCP;
|
|
|
|
passwd = genpasswd(32);
|
|
memset(buffer, 0, MAXPACKET);
|
|
strncpy(buffer, "$5$", 3);
|
|
cryptedpass = genpasswd(8);
|
|
strncpy(buffer + 3, cryptedpass, 8);
|
|
free(cryptedpass);
|
|
cryptedpass = crypt(passwd, buffer);
|
|
if (argc < 3) {
|
|
fprintf(stderr, "Missing node name and manager\n");
|
|
exit(1);
|
|
}
|
|
if (argc == 4) {
|
|
hmackeyfile = fopen(argv[3], "r");
|
|
hmackeysize = fread(hmackey, 1, 64, hmackeyfile);
|
|
fclose(hmackeyfile);
|
|
hmac_sha256(hmac, cryptedpass, strlen(cryptedpass), hmackey, hmackeysize);
|
|
}
|
|
sock = getaddrinfo(argv[2], "13001", &hints, &addrs);
|
|
if (sock != 0) {
|
|
fprintf(stderr, "Error trying to resolve %s\n", argv[2]);
|
|
exit(1);
|
|
}
|
|
for (curr = addrs; curr != NULL; curr = curr->ai_next) {
|
|
sock = socket(curr->ai_family, curr->ai_socktype, curr->ai_protocol);
|
|
if (sock < 0) continue;
|
|
if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &(int){1}, sizeof(int)) < 0) {
|
|
fprintf(stderr, "Failed setting reusaddr\n");
|
|
}
|
|
if (curr->ai_family == AF_INET) {
|
|
if (bind(sock, (struct sockaddr*)&net4bind, sizeof(struct sockaddr_in)) < 0) {
|
|
fprintf(stderr, "Unable to bind port 302\n");
|
|
exit(1);
|
|
}
|
|
} else if (curr->ai_family == AF_INET6) {
|
|
if (bind(sock, (struct sockaddr*)&net6bind, sizeof(struct sockaddr_in6)) < 0) {
|
|
fprintf(stderr, "Unable to bind port 302\n");
|
|
exit(1);
|
|
}
|
|
} else {
|
|
continue;
|
|
}
|
|
if (connect(sock, curr->ai_addr, curr->ai_addrlen) == 0) break;
|
|
}
|
|
if (curr == NULL) {
|
|
fprintf(stderr, "Unable to reach %s\n", argv[2]);
|
|
exit(1);
|
|
}
|
|
if (setsockopt(sock, SOL_SOCKET, SO_RCVTIMEO, &timeout, sizeof(timeout)) < 0) {
|
|
fprintf(stderr, "Unable to set timeout\n");
|
|
}
|
|
freeaddrinfo(addrs);
|
|
ret = read(sock, buffer, 8);
|
|
if (memcmp(buffer, "\xc2\xd1-\xa8\x80\xd8j\xba", 8) != 0) {
|
|
fprintf(stderr, "Unrecognized server\n");
|
|
exit(1);
|
|
}
|
|
slen = strlen(argv[1]) & 0xff;
|
|
dprintf(sock, "\x01%c%s", slen, argv[1]);
|
|
if (hmackeysize) {
|
|
ret = write(sock, "\x06\x20", 2);
|
|
ret = write(sock, hmac, 32);
|
|
} else
|
|
ret = write(sock, "\x00\x00", 2);
|
|
memset(buffer, 0, MAXPACKET);
|
|
ret = read(sock, buffer, 2);
|
|
while (buffer[0] != 255) {
|
|
currtype = buffer[0];
|
|
if (currtype & 0b10000000) {
|
|
currlen = buffer[1] << 8;
|
|
while (read(sock, buffer, 1) < 0) {};
|
|
currlen |= buffer[0];
|
|
} else {
|
|
currlen = buffer[1];
|
|
}
|
|
memset(buffer, 0, MAXPACKET);
|
|
if (currlen > 1000) {
|
|
fprintf(stderr, "Received oversized message\n");
|
|
exit(1);
|
|
}
|
|
if (currlen) {
|
|
ret = read(sock, buffer, currlen); // Max is 1000, well under MAX_PACKET
|
|
buffer[currlen] = 0;
|
|
}
|
|
if (currtype == 2) {
|
|
dprintf(sock, "\x03%c", (int)currlen);
|
|
ret = write(sock, buffer, currlen);
|
|
slen = strlen(cryptedpass) & 0xff;
|
|
dprintf(sock, "\x04%c%s", slen, cryptedpass);
|
|
ret = write(sock, "\x00\x00", 2);
|
|
} else if (currtype == 128) {
|
|
printf("SEALED:%s", buffer);
|
|
printf("\n");
|
|
exit(0);
|
|
} else if (currtype == 5) {
|
|
printf("%s", passwd);
|
|
printf("\n");
|
|
exit(0);
|
|
}
|
|
buffer[0] = 255;
|
|
ret = read(sock, buffer, 2);
|
|
}
|
|
fprintf(stderr, "Password was not accepted\n");
|
|
exit(1);
|
|
}
|