liquid_feedback_frontend

annotate fastpath/getpic.c @ 1587:d5c5bf6bfda5

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Show action element in issues only if necessary
author bsw
date Wed Jan 27 09:57:10 2021 +0100 (2021-01-27)
parents 7f7142e949ee
children
rev   line source
bsw/jbe@4 1 #include <stdlib.h>
bsw/jbe@4 2 #include <stdio.h>
bsw/jbe@4 3 #include <libpq-fe.h>
bsw/jbe@4 4 #include <string.h>
bsw/jbe@4 5 #include <regex.h>
bsw/jbe@4 6 #include <sys/types.h>
bsw/jbe@4 7 #include <sys/stat.h>
bsw/jbe@4 8 #include <unistd.h>
bsw/jbe@4 9
bsw/jbe@4 10 #ifndef GETPIC_CONNINFO
bsw/jbe@4 11 #define GETPIC_CONNINFO "dbname=liquid_feedback"
bsw/jbe@4 12 #endif
bsw/jbe@4 13
bsw/jbe@4 14 #ifndef GETPIC_DEFAULT_AVATAR
bsw/jbe@4 15 #define GETPIC_DEFAULT_AVATAR "/opt/liquid_feedback_testing/app/static/avatar.jpg"
bsw/jbe@4 16 #endif
bsw/jbe@4 17
bsw/jbe@4 18 int main(int argc, const char * const *argv) {
bsw/jbe@4 19
bsw/jbe@4 20 char *args_string;
bsw/jbe@4 21 char *member_id;
bsw/jbe@4 22 char *image_type;
bsw/jbe@52 23 const char *sql_member_image_params[2];
bsw/jbe@4 24
bsw@871 25 #ifndef PUBLIC_ACCESS
jbe@1108 26 #ifdef PUBLIC_AVATAR_ACCESS
jbe@1108 27 int authorization_required = 0;
jbe@1108 28 #endif
bsw/jbe@5 29 char *cookies;
bsw/jbe@5 30 regex_t session_ident_regex;
bsw/jbe@4 31 ssize_t start, length;
bsw/jbe@5 32 regmatch_t session_ident_regmatch[3];
bsw/jbe@4 33 char *session_ident;
bsw/jbe@52 34 const char *sql_session_params[1];
bsw@871 35 #endif
bsw/jbe@4 36
bsw/jbe@5 37 PGconn *conn;
bsw/jbe@5 38 PGresult *dbr;
bsw/jbe@4 39
bsw/jbe@4 40 args_string = getenv("QUERY_STRING");
bsw@873 41 if (!args_string) {
bsw@873 42 fputs("Status: 403 Access Denied\n\n", stdout);
bsw@873 43 return 0;
bsw@873 44 }
jbe@1108 45
jbe@1108 46 member_id = strtok(args_string, "+");
jbe@1108 47 image_type = strtok(NULL, "+");
jbe@1108 48 if (!member_id || !image_type) {
bsw/jbe@4 49 fputs("Status: 403 Access Denied\n\n", stdout);
bsw/jbe@4 50 return 0;
bsw/jbe@4 51 }
bsw/jbe@4 52 sql_member_image_params[0] = member_id;
bsw/jbe@4 53 sql_member_image_params[1] = image_type;
bsw/jbe@4 54
bsw@871 55 #ifndef PUBLIC_ACCESS
jbe@1108 56 #ifdef PUBLIC_AVATAR_ACCESS
jbe@1108 57 if (strcmp(image_type, "avatar")) {
jbe@1108 58 authorization_required = 1;
jbe@1108 59 #endif
jbe@1108 60 cookies = getenv("HTTP_COOKIE");
jbe@1108 61 if (!args_string || !cookies) {
jbe@1108 62 fputs("Status: 403 Access Denied\n\n", stdout);
jbe@1108 63 return 0;
jbe@1108 64 }
jbe@1108 65 if (regcomp(&session_ident_regex, "(^|[; \t])liquid_feedback_session=([0-9A-Za-z]+)", REG_EXTENDED) != 0) {
jbe@1108 66 // shouldn't happen
jbe@1108 67 abort();
jbe@1108 68 }
jbe@1108 69 if (regexec(&session_ident_regex, cookies, 3, session_ident_regmatch, 0) != 0) {
jbe@1108 70 fputs("Status: 403 Access Denied\n\n", stdout);
jbe@1108 71 return 0;
jbe@1108 72 }
jbe@1108 73 start = session_ident_regmatch[2].rm_so;
jbe@1108 74 length = session_ident_regmatch[2].rm_eo - session_ident_regmatch[2].rm_so;
jbe@1108 75 session_ident = malloc(length + 1);
jbe@1108 76 if (!session_ident) abort(); // shouldn't happen
jbe@1108 77 strncpy(session_ident, cookies + start, length);
jbe@1108 78 session_ident[length] = 0;
jbe@1108 79 sql_session_params[0] = session_ident;
jbe@1108 80 #ifdef PUBLIC_AVATAR_ACCESS
bsw/jbe@4 81 }
jbe@1108 82 #endif
bsw@874 83 #endif
bsw/jbe@4 84
bsw/jbe@4 85 conn = PQconnectdb(GETPIC_CONNINFO);
bsw/jbe@4 86 if (!conn) {
bsw/jbe@4 87 fputs("Could not create PGconn structure.\n", stderr);
bsw/jbe@4 88 return 1;
bsw/jbe@4 89 }
bsw/jbe@4 90 if (PQstatus(conn) != CONNECTION_OK) {
bsw/jbe@4 91 fputs(PQerrorMessage(conn), stderr);
bsw/jbe@5 92 PQfinish(conn);
bsw/jbe@4 93 return 1;
bsw/jbe@4 94 }
bsw/jbe@4 95
bsw@874 96 #ifndef PUBLIC_ACCESS
jbe@1108 97 #ifdef PUBLIC_AVATAR_ACCESS
jbe@1108 98 if (authorization_required) {
jbe@1108 99 #endif
jbe@1108 100 dbr = PQexecParams(conn,
jbe@1108 101 "SELECT NULL FROM session JOIN member ON member.id = session.member_id WHERE session.ident = $1 AND member.active",
jbe@1108 102 1, NULL, sql_session_params, NULL, NULL, 0
jbe@1108 103 );
jbe@1108 104 if (PQresultStatus(dbr) != PGRES_TUPLES_OK) {
jbe@1108 105 fputs(PQresultErrorMessage(dbr), stderr);
jbe@1108 106 PQfinish(conn);
jbe@1108 107 return 1;
jbe@1108 108 }
jbe@1108 109 if (PQntuples(dbr) != 1) {
jbe@1108 110 fputs("Status: 403 Access Denied\n\n", stdout);
jbe@1108 111 PQfinish(conn);
jbe@1108 112 return 0;
jbe@1108 113 }
jbe@1108 114 #ifdef PUBLIC_AVATAR_ACCESS
bsw/jbe@4 115 }
jbe@1108 116 #endif
bsw@871 117 #endif
bsw/jbe@4 118
bsw/jbe@4 119 dbr = PQexecParams(conn,
bsw/jbe@4 120 "SELECT content_type, data "
bsw/jbe@4 121 "FROM member_image "
bsw/jbe@4 122 "WHERE member_id = $1 "
bsw/jbe@4 123 "AND image_type = $2 "
bsw/jbe@4 124 "AND scaled "
bsw/jbe@4 125 "LIMIT 1;",
bsw/jbe@4 126 2, NULL, sql_member_image_params, NULL, NULL, 1
bsw/jbe@4 127 );
bsw/jbe@4 128 if (PQresultStatus(dbr) != PGRES_TUPLES_OK) {
bsw/jbe@4 129 fputs(PQresultErrorMessage(dbr), stderr);
bsw/jbe@5 130 PQfinish(conn);
bsw/jbe@4 131 return 1;
bsw/jbe@4 132 }
bsw/jbe@4 133 if (PQntuples(dbr) == 0) {
bsw/jbe@4 134 struct stat sb;
bsw/jbe@4 135 PQclear(dbr);
bsw/jbe@4 136 PQfinish(conn);
bsw/jbe@4 137 fputs("Content-Type: image/jpeg\n\n", stdout);
bsw/jbe@4 138 if (stat(GETPIC_DEFAULT_AVATAR, &sb)) return 1;
bsw/jbe@5 139 fprintf(stdout, "Content-Length: %i\n", (int)sb.st_size);
bsw/jbe@4 140 execl("/bin/cat", "cat", GETPIC_DEFAULT_AVATAR, NULL);
bsw/jbe@4 141 return 1;
bsw/jbe@4 142 } else {
bsw/jbe@4 143 if (PQnfields(dbr) < 0) {
bsw/jbe@4 144 fputs("Too few columns returned by database.\n", stderr);
bsw/jbe@5 145 PQfinish(conn);
bsw/jbe@4 146 return 1;
bsw/jbe@4 147 }
bsw/jbe@4 148 if (PQfformat(dbr, 0) != 1 || PQfformat(dbr, 1) != 1) {
bsw/jbe@4 149 fputs("Database did not return data in binary format.\n", stderr);
bsw/jbe@5 150 PQfinish(conn);
bsw/jbe@4 151 return 1;
bsw/jbe@4 152 }
bsw/jbe@4 153 if (PQgetisnull(dbr, 0, 0) || PQgetisnull(dbr, 0, 1)) {
bsw/jbe@4 154 fputs("Unexpected NULL in database result.\n", stderr);
bsw/jbe@5 155 PQfinish(conn);
bsw/jbe@4 156 return 1;
bsw/jbe@4 157 }
bsw/jbe@52 158 fprintf(stdout, "Content-Type: %s\n\n", PQgetvalue(dbr, 0, 0));
bsw/jbe@4 159 fwrite(PQgetvalue(dbr, 0, 1), PQgetlength(dbr, 0, 1), 1, stdout);
bsw/jbe@4 160 }
bsw/jbe@4 161 PQfinish(conn);
bsw/jbe@4 162 return 0;
bsw/jbe@5 163
bsw/jbe@4 164 }

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