src/lib-mail/test-istream-qp-decoder.c

/* Copyright (c) 2010-2018 Dovecot authors, see the included COPYING file */

#include "test-lib.h"
#include "str.h"
#include "istream-private.h"
#include "istream-qp.h"

static const struct {
    const char *input;
    const char *output;
    int stream_errno;
} tests[] = {
    { "p=C3=A4=C3=A4t=C3=B6s", "p\xC3\xA4\xC3\xA4t\xC3\xB6s", 0 },
    { "p=c3=a4=c3=a4t=c3=b6s=  \n", "p\xC3\xA4\xC3\xA4t\xC3\xB6s", 0 },
    { "p=c3=a4= \t \n=c3=\r\n=a4t=  \r\n=c3=b6s", "p\xC3\xA4\xC3\xA4t\xC3\xB6s", 0 },

    { "p=c3=a4\rasdf", "p\xC3\xA4", EINVAL },
    { "p=c", "p", EPIPE },
    { "p=A", "p", EPIPE },
    { "p=Ax", "p", EINVAL },
    { "p=c3=a4=c3=a4t=c3=b6s=  ", "p\xC3\xA4\xC3\xA4t\xC3\xB6s", EPIPE }
};

static void
decode_test(const char *qp_input, const char *output, int stream_errno,
        unsigned int buffer_size)
{
    size_t qp_input_len = strlen(qp_input);
    struct istream *input_data, *input;
    const unsigned char *data;
    size_t i, size;
    string_t *str = t_str_new(32);
    int ret = 0;

    input_data = test_istream_create_data(qp_input, qp_input_len);
    test_istream_set_max_buffer_size(input_data, buffer_size);
    test_istream_set_allow_eof(input_data, FALSE);
    input = i_stream_create_qp_decoder(input_data);

    for (i = 1; i <= qp_input_len; i++) {
        test_istream_set_size(input_data, i);
        while ((ret = i_stream_read_more(input, &data, &size)) > 0) {
            str_append_n(str, data, size);
            i_stream_skip(input, size);
        }
        if (ret == -1 && stream_errno != 0)
            break;
        test_assert(ret == 0);
    }
    if (ret == 0) {
        test_istream_set_allow_eof(input_data, TRUE);
        while ((ret = i_stream_read_more(input, &data, &size)) > 0) {
            str_append_n(str, data, size);
            i_stream_skip(input, size);
        }
    }
    test_assert(ret == -1);
    test_assert(input->stream_errno == stream_errno);

    test_assert(strcmp(str_c(str), output) == 0);
    i_stream_unref(&input);
    i_stream_unref(&input_data);
}

static void test_istream_qp_decoder(void)
{
    unsigned int i, j;

    for (i = 0; i < N_ELEMENTS(tests); i++) {
        test_begin(t_strdup_printf("istream qp decoder %u", i+1));
        for (j = 1; j < 10; j++) T_BEGIN {
            decode_test(tests[i].input, tests[i].output,
                    tests[i].stream_errno, j);
        } T_END;
        test_end();
    }
}

int main(void)
{
    static void (*const test_functions[])(void) = {
        test_istream_qp_decoder,
        NULL
    };
    return test_run(test_functions);
}