github.com/pdfcpu/pdfcpu@v0.11.1/pkg/api/certificate.go (about)

     1  /*
     2  	Copyright 2025 The pdfcpu Authors.
     3  
     4  	Licensed under the Apache License, Version 2.0 (the "License");
     5  	you may not use this file except in compliance with the License.
     6  	You may obtain a copy of the License at
     7  
     8  		http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  	Unless required by applicable law or agreed to in writing, software
    11  	distributed under the License is distributed on an "AS IS" BASIS,
    12  	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  	See the License for the specific language governing permissions and
    14  	limitations under the License.
    15  */
    16  
    17  package api
    18  
    19  import (
    20  	"crypto/x509"
    21  	"fmt"
    22  	"os"
    23  
    24  	"github.com/pdfcpu/pdfcpu/pkg/pdfcpu"
    25  	"github.com/pdfcpu/pdfcpu/pkg/pdfcpu/model"
    26  )
    27  
    28  func LoadCertificates() (int, error) {
    29  
    30  	if model.UserCertPool != nil {
    31  		return 0, nil
    32  	}
    33  
    34  	// if log.CLIEnabled() {
    35  	// 	log.CLI.Printf("certDir: %s\n", model.CertDir)
    36  	// }
    37  
    38  	if err := os.MkdirAll(model.CertDir, os.ModePerm); err != nil {
    39  		return 0, err
    40  	}
    41  
    42  	rootCAs := x509.NewCertPool()
    43  
    44  	n, err := pdfcpu.LoadCertificatesToCertPool(model.CertDir, rootCAs)
    45  	if err != nil {
    46  		return 0, err
    47  	}
    48  
    49  	model.UserCertPool = rootCAs
    50  
    51  	return n, nil
    52  }
    53  
    54  // ImportCertificates validates and imports found certificate files to pdfcpu config dir.
    55  func ImportCertificates(inFiles []string) ([]string, error) {
    56  	count := 0
    57  	overwrite := true
    58  	ss := []string{}
    59  	for _, inFile := range inFiles {
    60  		n, ok, err := pdfcpu.ImportCertificate(inFile, overwrite)
    61  		if err != nil {
    62  			return nil, err
    63  		}
    64  		if !ok {
    65  			ss = append(ss, fmt.Sprintf("%s skipped (already imported)", inFile))
    66  			continue
    67  		}
    68  		ss = append(ss, fmt.Sprintf("%s: %d certificates", inFile, n))
    69  		count += n
    70  	}
    71  
    72  	ss = append(ss, fmt.Sprintf("imported %d certificates", count))
    73  	return ss, nil
    74  }
    75  
    76  func InspectCertificates(inFiles []string) ([]string, error) {
    77  	count := 0
    78  	ss := []string{}
    79  
    80  	for _, inFile := range inFiles {
    81  
    82  		certs, err := pdfcpu.LoadCertificates(inFile)
    83  		if err != nil {
    84  			return nil, err
    85  		}
    86  
    87  		ss = append(ss, fmt.Sprintf("%s: %d certificates\n", inFile, len(certs)))
    88  
    89  		for i, cert := range certs {
    90  			s, err := pdfcpu.InspectCertificate(cert)
    91  			if err != nil {
    92  				return nil, err
    93  			}
    94  			ss = append(ss, fmt.Sprintf("%d:", i+1))
    95  			ss = append(ss, s)
    96  			count++
    97  		}
    98  
    99  	}
   100  
   101  	ss = append(ss, fmt.Sprintf("inspected %d certificates", count))
   102  	return ss, nil
   103  }