jk_map.c

来自「以便Apache与其他服务进行整合 Mod_JK安装」· C语言 代码 · 共 855 行 · 第 1/2 页

                                       strlen(*v) + strlen(oldv) + 3);
            if (tmpv) {
                char sep = '*';
                if (jk_is_path_property(prp))
                    sep = PATH_SEPERATOR;
                else if (jk_is_cmd_line_property(prp))
                    sep = ' ';
                else if (jk_is_list_property(prp))
                    sep = ',';
                sprintf(tmpv, "%s%c%s", oldv, sep, *v);
            }
            *v = tmpv;
            if (JK_IS_DEBUG_LEVEL(l))
                jk_log(l, JK_LOG_DEBUG,
                       "Concatenated value is: %s -> %s",
                       prp, *v);
            return JK_FALSE;
        }
        else {
            jk_log(l, JK_LOG_WARNING,
                   "Duplicate key '%s' detected - previous value '%s'"
                   " will be overwritten with '%s'.",
                   prp, oldv ? oldv : "(null)", v ? *v : "(null)");
            return JK_TRUE;
        }
    }
    else {
        return JK_TRUE;
    }
}

int jk_map_read_property(jk_map_t *m, const char *str,
                         int treatment, jk_logger_t *l)
{
    int rc = JK_TRUE;
    char buf[LENGTH_OF_LINE + 1];
    char *prp = &buf[0];

    if (strlen(str) > LENGTH_OF_LINE) {
        jk_log(l, JK_LOG_WARNING,
               "Line to long (%d > %d), ignoring entry",
               strlen(str), LENGTH_OF_LINE);
        return JK_FALSE;
    }

    strcpy(prp, str);
    if (trim(prp)) {
        char *v = strchr(prp, '=');
        if (v) {
            *v = '\0';
            v++;
            trim(prp);
            trim(v);
            if (strlen(v) && strlen(prp)) {
                if (treatment == JK_MAP_HANDLE_RAW) {
                    v = jk_pool_strdup(&m->p, v);
                }
                else {
                    if (jk_map_validate_property(prp, l) == JK_FALSE)
                        return JK_FALSE;
                    v = jk_map_replace_properties(m, v);
                    if (jk_map_handle_duplicates(m, prp, &v, treatment, l) == JK_TRUE)
                        v = jk_pool_strdup(&m->p, v);
                }
                if (v) {
                    if (JK_IS_DEBUG_LEVEL(l))
                        jk_log(l, JK_LOG_DEBUG,
                               "Adding property '%s' with value '%s' to map.",
                               prp, v);
                    jk_map_put(m, prp, v, NULL);
                }
                else {
                    JK_LOG_NULL_PARAMS(l);
                    rc = JK_FALSE;
                }
            }
        }
    }
    return rc;
}


int jk_map_read_properties(jk_map_t *m, const char *f, time_t *modified,
                           int treatment, jk_logger_t *l)
{
    int rc = JK_FALSE;

    if (m && f) {
        struct stat statbuf;
        FILE *fp;
        if (jk_stat(f, &statbuf) == -1)
            return JK_FALSE;
#if defined(AS400) && !defined(AS400_UTF8)
        fp = fopen(f, "r, o_ccsid=0");
#else
        fp = fopen(f, "r");
#endif

        if (fp) {
            char buf[LENGTH_OF_LINE + 1];
            char *prp;

            rc = JK_TRUE;

            while (NULL != (prp = fgets(buf, LENGTH_OF_LINE, fp))) {
                trim_prp_comment(prp);
                if (*prp) {
                    if ((rc = jk_map_read_property(m, prp, treatment, l)) == JK_FALSE)
                        break;
                }
            }
            fclose(fp);
            if (modified)
                *modified = statbuf.st_mtime;
        }
    }

    return rc;
}


int jk_map_size(jk_map_t *m)
{
    if (m) {
        return m->size;
    }

    return -1;
}

const char *jk_map_name_at(jk_map_t *m, int idex)
{
    if (m && idex >= 0) {
        return m->names[idex];  /* DIRTY */
    }

    return NULL;
}

void *jk_map_value_at(jk_map_t *m, int idex)
{
    if (m && idex >= 0) {
        return (void *)m->values[idex]; /* DIRTY */
    }

    return NULL;
}

void jk_map_dump(jk_map_t *m, jk_logger_t *l)
{
    if (m) {
        if (JK_IS_DEBUG_LEVEL(l)) {
            int s = jk_map_size(m);
            int i;
            for (i=0;i<s;i++) {
                jk_log(l, JK_LOG_DEBUG,
                       "Dump of map: '%s' -> '%s'",
                       jk_map_name_at(m, i), jk_map_value_at(m, i));
            }
        }
    }
}

static void trim_prp_comment(char *prp)
{
#if defined(AS400) && !defined(AS400_UTF8)
    char *comment;
    /* lots of lines that translate a '#' realtime deleted   */
    comment = strchr(prp, *APR_NUMBERSIGN);
#else
    char *comment = strchr(prp, '#');
#endif
    if (comment) {
        *comment = '\0';
    }
}

static size_t trim(char *s)
{
    size_t i;

    /* check for empty strings */
    if (!(i = strlen(s)))
        return 0;
    for (i = i - 1; (i >= 0) &&
         isspace((int)((unsigned char)s[i])); i--);

    s[i + 1] = '\0';

    for (i = 0; ('\0' != s[i]) &&
         isspace((int)((unsigned char)s[i])); i++);

    if (i > 0) {
        strcpy(s, &s[i]);
    }

    return strlen(s);
}

static int map_realloc(jk_map_t *m)
{
    if (m->size == m->capacity) {
        char **names;
        void **values;
        unsigned int *keys;
        int capacity = m->capacity + CAPACITY_INC_SIZE;

        names = (char **)jk_pool_alloc(&m->p, sizeof(char *) * capacity);
        values = (void **)jk_pool_alloc(&m->p, sizeof(void *) * capacity);
        keys = (unsigned int *)jk_pool_alloc(&m->p, sizeof(unsigned int) * capacity);

        if (values && names) {
            if (m->capacity && m->names)
                memcpy(names, m->names, sizeof(char *) * m->capacity);

            if (m->capacity && m->values)
                memcpy(values, m->values, sizeof(void *) * m->capacity);

            if (m->capacity && m->keys)
                memcpy(keys, m->keys, sizeof(unsigned int) * m->capacity);

            m->names = (const char **)names;
            m->values = (const void **)values;
            m->keys = keys;
            m->capacity = capacity;

            return JK_TRUE;
        }
    }

    return JK_FALSE;
}

/**
 *  Replace $(property) in value.
 *
 */
char *jk_map_replace_properties(jk_map_t *m, const char *value)
{
    char *rc = (char *)value;
    char *env_start = rc;
    int rec = 0;

    while ((env_start = strstr(env_start, "$(")) != NULL) {
        char *env_end = strstr(env_start, ")");
        if (rec++ > 20)
            return rc;
        if (env_end) {
            char env_name[LENGTH_OF_LINE + 1] = "";
            const char *env_value;
#if defined(WIN32)
            char env_buf[LENGTH_OF_LINE + 1];
#endif
            *env_end = '\0';
            strcpy(env_name, env_start + 2);
            *env_end = ')';

            env_value = jk_map_get_string(m, env_name, NULL);
            if (!env_value) {
                env_value = getenv(env_name);
            }
#if defined(WIN32)
            if (!env_value) {
                /* Try the env block from calling process */
                if (GetEnvironmentVariable(env_name, env_buf,
                                           sizeof(env_buf)))
                    env_value = &env_buf[0];
            }
#endif
            if (env_value) {
                size_t offset = 0;
                char *new_value = jk_pool_alloc(&m->p,
                                                (sizeof(char) *
                                                (strlen(rc) +
                                                strlen(env_value))));
                if (!new_value) {
                    break;
                }
                *env_start = '\0';
                strcpy(new_value, rc);
                strcat(new_value, env_value);
                strcat(new_value, env_end + 1);
                offset = env_start - rc + strlen(env_value);
                rc = new_value;
                /* Avoid recursive subst */
                env_start = rc + offset;
            }
            else {
                env_start = env_end;
            }
        }
        else {
            break;
        }
    }

    return rc;
}

/**
 *  Resolve references
 *
 */
int jk_map_resolve_references(jk_map_t *m, const char *prefix,
                              int wildcard, int depth, jk_logger_t *l)
{
    int rc = JK_FALSE;

    JK_TRACE_ENTER(l);

    if (m && prefix) {
        if (depth <= JK_MAP_RECURSION) {
            size_t prelen = strlen(prefix);
            unsigned int i;
            rc = JK_TRUE;
            if (JK_IS_DEBUG_LEVEL(l))
                jk_log(l, JK_LOG_DEBUG,
                       "Checking for references with prefix %s with%s wildcard (recursion %d)",
                       prefix, wildcard? "" : "out", depth);
            for (i = 0; i < m->size; i++) {
                if (m->values[i] && !strncmp(m->names[i], prefix, prelen)) {
                    size_t remain = strlen(m->names[i]) - prelen;
                    if ((remain == JK_MAP_REFERENCE_SZ ) || (wildcard && remain > JK_MAP_REFERENCE_SZ)) {
                        remain = strlen(m->names[i]) - JK_MAP_REFERENCE_SZ;
                        if (!strncmp(m->names[i] + remain, JK_MAP_REFERENCE, JK_MAP_REFERENCE_SZ)) {
                            char *from = jk_pool_alloc(&m->p,
                                                       (sizeof(char) *
                                                       (strlen(m->values[i]) + 2)));
                            char *to = jk_pool_alloc(&m->p,
                                                     (sizeof(char) *
                                                     (remain + 2)));
                            if (!from || !to) {
                                jk_log(l, JK_LOG_ERROR,
                                       "Error in string allocation");
                                rc = JK_FALSE;
                                break;
                            }
                            strcpy(from, m->values[i]);
                            *(from+strlen(m->values[i]))   = '.';
                            *(from+strlen(m->values[i])+1) = '\0';
                            strncpy(to, m->names[i], remain);
                            *(to+remain)   = '.';
                            *(to+remain+1) = '\0';

                            rc = jk_map_resolve_references(m, m->values[i], 0, depth+1, l);
                            if (rc == JK_FALSE) {
                                break;
                            }
                            if (JK_IS_DEBUG_LEVEL(l))
                                jk_log(l, JK_LOG_DEBUG,
                                       "Copying values from %s to %s",
                                       from, to);
                            rc = jk_map_inherit_properties(m, from, to, l);
                            if (rc == JK_FALSE) {
                                break;
                            }
                            m->values[i] = NULL;
                        }
                    }
                }
            }
        }
        else {
            jk_log(l, JK_LOG_ERROR,
                   "Recursion limit %d for worker references with prefix '%s' reached",
                   JK_MAP_RECURSION, prefix);
        }
    }
    else {
        JK_LOG_NULL_PARAMS(l);
    }
    JK_TRACE_EXIT(l);
    return rc;
}

/**
 *  Inherit properties
 *
 */
int jk_map_inherit_properties(jk_map_t *m, const char *from, const char *to, jk_logger_t *l)
{
    int rc = JK_FALSE;
    const char *prp;
    char *to_prp;

    if (m && from && to) {
        unsigned int i;
        for (i = 0; i < m->size; i++) {
            if (!strncmp(m->names[i], from, strlen(from))) {
                rc = JK_TRUE;
                prp = m->names[i] + strlen(from);
                to_prp = jk_pool_alloc(&m->p,
                                       (sizeof(char) *
                                       (strlen(to) +
                                       strlen(prp) + 1)));
                if (!to_prp) {
                    jk_log(l, JK_LOG_ERROR,
                           "Error in string allocation for attribute '%s.%s'",
                           to, prp);
                    rc = JK_FALSE;
                    break;
                }
                strcpy(to_prp, to);
                strcat(to_prp, prp);
                if (jk_map_get_id(m, to_prp) < 0 ) {
                    rc = jk_map_add(m, to_prp, m->values[i]);
                    if (rc == JK_FALSE) {
                        jk_log(l, JK_LOG_ERROR,
                               "Error when adding attribute '%s'",
                               to_prp);
                        break;
                    }
                }
            }
        }
        if ( rc == JK_FALSE) {
            jk_log(l, JK_LOG_ERROR,
                   "Reference '%s' not found",
                   from);
        }
    }
    else {
        JK_LOG_NULL_PARAMS(l);
    }
    return rc;
}